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Benefits and harm of systemic steroids for short- and long-term use in rhinitis and rhinosinusitis: an EAACI position paper
Clinical and Translational Allergy volume 10, Article number: 1 (2020)
Because of the inflammatory mechanisms of most chronic upper airway diseases such as rhinitis and chronic rhinosinusitis, systemic steroids have been used for their treatment for decades. However, it has been very well documented that—potentially severe—side-effects can occur with the accumulation of systemic steroid courses over the years. A consensus document summarizing the benefits of systemic steroids for each upper airway disease type, as well as highlighting the potential harms of this treatment is currently lacking. Therefore, a panel of international experts in the field of Rhinology reviewed the available literature with the aim of providing recommendations for the use of systemic steroids in treating upper airway disease.
Chronic upper airway inflammation is one of the most prevalent chronic disease entities in the world with rhinitis being the most common presentation form affecting 30% of the Western population .
Rhinitis is defined as an inflammation of the lining of the nose and is characterized by nasal symptoms including rhinorrhoea, sneezing, nasal blockage and/or itching of the nose. Allergic rhinitis (AR) is the best-known form of non-infectious rhinitis and is associated with an IgE-mediated immune response against allergens . However, a substantial group of rhinitis patients has no known allergy and they form a very heterogeneous non-allergic rhinitis (NAR) patient population suffering from drug-induced rhinitis, occupational rhinitis, irritant-induced rhinitis, hormonally linked rhinitis and idiopathic rhinitis [2, 3]. When inflammation of the nasal mucosa extends to the mucosa of the paranasal sinuses, the consensus term of rhinosinusitis is used. Rhinosinusitis has been shown to affect about 10% of the Western population . In addition to rhinitis symptoms, rhinosinusitis is characterized by postnasal drip, facial pressure and reduction or loss of smell . Acute rhinosinusitis (ARS) is a very common condition and mostly of viral origin . About 0.5–2% of the viral ARS are complicated by a bacterial infection .
Chronic rhinosinusitis (CRS) is defined as the presence of two or more nasal symptoms, one of which should be either nasal blockage or nasal discharge, and/or smell problems, and/or facial pain for more than 12 weeks, in combination with inflammatory signs confirmed by nasal endoscopy and/or CT scan. CRS can either present with nasal polyps (CRSwNP) or without (CRSsNP). Additionally, chronic upper airway disease often coexists with lower airway problems, most frequently asthma, but also a link with chronic obstructive pulmonary disease (COPD) and bronchiectasis has been reported .
Glucocorticosteroids (GCS) are the oldest and most widely used anti-inflammatory therapy. Since their introduction in the 1950s, GCS have played a key role in the treatment of various inflammatory, allergic, and immunologic disorders. Consequently, they are known as a very effective drug for treating chronic airway inflammatory diseases involving both lower as well as upper airways [1, 4, 7]. GCS can be administered topical or systemically. If possible topical GCS are preferred over systemic GCS treatment as it is well known that this systemic GCS treatment is linked to an extensive range of potential adverse effects (AE’s) that have been well-described in the literature and vary from uncomfortable to life-threatening . Notably, reports on AE and/or toxicity of systemic GCS cover a heterogeneous group of GCS-treated diseases, which complicates the interpretation of the actual risk for the rhinitis/rhinosinusitis patients.
Therefore, the risk–benefit ratio of treating non-life-threatening upper airway diseases with systemic GCS remains debatable and needs clarification.
This document summarizes the current evidence for beneficial as well as harmful effects of administration of systemic GCS in the different types of upper airway disease and aims at providing recommendations about its use in rhinitis and rhinosinusitis based on the current evidence. For each topic 2 experts in the field were appointed to review the literature and topics that were appropriate for clinical recommendations were considered as evidence-based reviews with recommendations. The experts then provided a recommendation based upon the guidelines of the American Academy of Pediatrics (following the recommendation strategy used by the International Consensus on Allergy and Rhinology ). Table 1 summarizes the recommendation development based on the combination between levels of evidence and the benefit/harm balance. Generally, the search was focused on adults. Two experts reviewed the literature specifically for the pediatric population.
The search was performed in the MEDLINE (Ovid 1946—current; and PubMed 1966—current) and Cochrane databases. The search strategy was based on a combination of MeSH-terms and free text words. Search terms are listed in Additional file 1.
Mechanisms and actions of GCS
Corticosteroids, which are produced by the adrenal glands, can be classified as glucocorticoids and mineralocorticoids. Cortisol is the endogenous glucocorticoid in humans, naturally derived from cholesterol metabolism upon stimulation by the hypothalamic–pituitary–adrenal axis (Fig. 1), which is regulated initially by the circadian rhythm, but also by negative feedback by glucocorticoids and glucocorticoid increment induced by stressors such as pain, inflammation or infections .
GCS are involved in several physiologic functions. They control the metabolism of carbohydrates, proteins and lipids, as well as the balance of calcium [11, 12]. However, the most explored effects of GCS are the anti-inflammatory and immune-suppressive functions. GCS inhibit the activation and survival of inflammatory cells and modulate the activity of structural cells [13, 14]. The main anti-inflammatory effects of GCS are based on their ability to reduce the synthesis of several cytokines (IL-1, -2, -3, -4, -5, -6, -8, TNF-α, IFN-γ, GM-CSF) from many cells (macrophages, monocytes, lymphocytes, fibroblasts, and epithelial and endothelial cells). This affects recruitment, localization, protein synthesis, and survival of inflammatory cells such as eosinophils . The recruitment of inflammatory cells is also diminished by an inhibited expression of adhesion molecules such as ICAM-1 and VCAM-1 , which affects the influx of basophils and mast cells in the epithelial layers of nasal mucosa. Finally, GCS are involved in the pathological wound repair mechanism called remodelling. Remodelled tissue such as the stroma of nasal polyps contains abundant infiltration of inflammatory cells, increased fibroblasts numbers and increased extra-cellular matrix deposition. However, GCS appear to be minimally effective in reversing the structural changes resulting from remodelling .
All these effects are exerted by intracellular activation of the glucocorticoid receptor (GR) . The GR belongs to the superfamily of ligand regulated nuclear receptors  and alternative splicing of the GR primary transcript generates two receptor isoforms, named GRα and GRβ. GRα has a widespread distribution in cells and tissues , including healthy and diseased upper airway mucosa. Inactive GRα is found primarily in the cytoplasm of cells as part of a large multi-protein complex . Glucocorticoids diffuse across the cell membrane and bind to GRα resulting in a nuclear entry (Fig. 2)  where GRβ modulates either positively or negatively the expression of target genes. GRβ has a very low level of expression compared to GRα  and acts mainly as a negative inhibitor of GRα-mediated gene modulation .
The anti-inflammatory effects of GCS are explained by three broad molecular mechanisms: the decreased expression of pro-inflammatory genes (trans-repression), the increased expression of anti-inflammatory genes (trans-activation), and non-genomic mechanisms. Trans-repression is thought to be mainly due to direct interactions between GRα and pro-inflammatory transcription factors such as the activator protein-1 (AP-1) and NF-κB . Trans-activation is explained by the interaction of GRα to specific target DNA sequences, named glucocorticoid-responsive elements (GRE). Among the genes activated by GRα through GRE with anti-inflammatory functions, there are the mitogen activated protein kinase phosphatase-1, the glucocorticoid inducible leucine zipper and tristetraprolin. In addition, the activated GRα can also reduce inflammation at the post-transcriptional (altering mRNA stability), translational (affecting protein synthesis) and post-translational levels (altering protein processing, modification or degradation) (Fig. 2). For example, the expression of cyclooxygenase-2, TNF-α and GM-CSF are regulated by one or more of these postgenomic mechanisms .
Increased expression of GRβ has been reported in different inflammatory diseases, including asthma, and nasal polyposis and has been proposed as one of the potential mechanisms explaining GC resistance . The expression of GRβ is higher in nasal polyps than in nasal mucosa epithelial cells and correlates with increased infiltration of inflammatory cells . Although down-regulation of GRα after treatment with glucocorticoids has been reported  and could account for secondary steroid resistance, a recent study in patients in patients with nasal polyps has shown that this effect does not occur in vivo .
Evidence for efficacy of systemic GCS in different inflammatory upper airway diseases
1. Allergic rhinitis
AR is the most prevalent presentation form of all allergic diseases and the most com-mon chronic disorder in children. It is considered a risk factor for the development of asthma and a major public health problem, due to its prevalence and impact on patients’ quality of life, work/school performance, and economic burden .
Intranasal GCS and oral/topical antihistamines are the most effective symptomatic treatment for AR and should be the first-line therapy for mild to moderate disease [30, 31]. Moderate to severe disease not responsive to intranasal GCS, should be treated with additional pharmacological therapies (including cromolyns and leukotriene receptor antagonists), allergen immunotherapy (AIT) and non-pharmacologic therapies (such as nasal irrigation) [30, 31]. Usually a combination of intranasal GCS and a topical or oral antihistamine is used for moderate to severe AR.
Regarding the use of systemic GCS in AR, the current evidence is scarce. Three studies compared the effect of systemic GCS in adult patients (> 15 year old) with AR (Table 2).
The first randomized controlled trial (RCT) from 1987 showed a beneficial effect of a depot injection of 80 mg methylprednisolone (MP) vs. placebo on nasal obstruction and eye symptoms in 48 AR patients, which lasted for 4 weeks . The second study by Brooks et al.  investigated the efficacy of different doses of oral MP and placebo in patients not treated with other medications. Thirty-one patients were randomized to receive 0, 6, 12, or 24 mg MP. Oral GCS produced dose-related reduction in all symptoms. The difference between placebo and 24 mg MP was significant for all the symptoms monitored, except itching, which benefited marginally. With 6 mg MP, congestion, drainage, and eye symptoms showed significant drug-placebo differences, but itching, running/blowing, and sneezing did not. The third study by Laursen et al.  compared prednisone 7.5 mg for 3 weeks with a single intramuscular injection of betamethasone dipropionate also in patients not treated with other medications. This study showed a therapeutic index in favour of the depot injection versus oral treatment in AR .
Despite the therapeutic benefits of systemic GCS in the treatment of AR that were shown in these studies, their use is strongly recommended against in view of the AE’s GCS that are discussed below, and a short course of systemic GCS is only indicated in rare cases. These cases include patients with severe symptoms who do not respond to other drugs, or those who are intolerant to intranasal drugs [1, 35]. Systemic GCS should never be considered as a first-line of treatment for AR . Consequently, oral GCS can be used for a few days as in carefully selected cases when other medical treatment options have failed.
Evidence level: B.
Benefits–harm assessment: AE’s of systemic GCS outweigh advantages of therapeutic value, except for patients suffering from very severe and therapy-resistant symptoms.
Recommendation: Strong recommendation against. Option in patients suffering from very severe and therapy-resistant symptoms.
2. Non-allergic rhinitis
Although, the prevalence of NAR among the chronic rhinitis patients ranges from 20 to 50% , their disease mechanisms and treatment options are much less studied than their allergic peers. NAR comprises a heterogeneous group of chronic rhinitis subtypes, such as drug-induced rhinitis, hormonal-induced rhinitis, some forms of occupational rhinitis and rhinitis linked to systemic diseases . However, in about 50% of the NAR patients, no specific causal factor can be found and this is addressed as idiopathic rhinitis (IR) . Up till now, no studies are available that investigate the effectiveness of systemic steroids in NAR or IR patients. However, since it is believed that in IR neurogenic pathways are involved, rather than classical inflammatory pathways , systemic GCS are not the therapy of choice. Of note, all IR patients included in a recent study investigating the effect of capsaicin in IR, reported lack of clinical response to intranasal GCS . By extrapolation, there is a low likelihood of oral GCS being effective in this patient population, unless more than one etiologic or inflammatory mechanism underlies the development of rhinitis.
Only in selected cases of other subtypes of NAR, such as rhinitis linked to vasculitic or systemic diseases, oral GCS might play a role in the treatment strategy (see below) . Although oral GCS are often prescribed in patients suffering from rhinitis medicamentosa to overcome the withdrawal period of topical decongestants, there are no valuable studies supporting this clinical practice.
Evidence level: D.
Benefits–harm assessment: AE’s of systemic GCS outweigh advantages of therapeutic value.
Recommendation: Recommendation against.
3. Acute rhinosinusitis
Compared to the literature on effectiveness of systemic GCS in CRS, data on acute rhinosinusitis (ARS) are scarce. In 2014 an update of a Cochrane review was published  concluding that systemic GCS as a monotherapy are ineffective compared to placebo in ARS patients, but might have a beneficial effect on short-term symptom relief when used as an adjunctive therapy to antibiotics.
Up to date, five randomized, placebo-controlled trials investigating the effect of oral GCS in adults with ARS are available and included in the Cochrane meta-analysis (Table 3). From those, only one focused on systemic GCS as a monotherapy . In this high-quality second-line clinical trial, patients with clinically diagnosed ARS were randomized to receive either prednisolone 30 mg/day or placebo for 7 days. In the 174 patients who completed the trial, no clinically relevant benefit of prednisolone over placebo was found regarding facial pain or pressure, other nasal symptoms or quality of life.
Four other RCTs investigated the adjunctive effect of systemic GCS to oral antibiotics in ARS. Gehanno et al.  reported the adjuvant effect of 5 days of 3 × 8 mg MP/day to amoxicillin–clavulanate in 417 patients. On day four, patients showed significantly less pain in the steroid group whereas nasal discharge did not significantly improve. The use of additional medication was not reported.
In 2004, two similar studies were published; a French study  showed a beneficial effect on pain with oral prednisone as an add-on therapy to cefpodoxime in 291 ARS patients. Also Ratau et al.  reported a significant benefit of 1 mg of oral betamethasone per day as adjunct to amoxicillin–clavulanate in 42 patients.
In 1990 Cannoni already published similar findings showing a better symptom resolution in ARS patients treated with 40 mg prednisolone/day in combination with antibiotics, compared to patients receiving a non-steroidal anti-inflammatory drug (NSAID) with antibiotics .
Altogether, these limited data suggest that systemic GCS as a monotherapy appear to be ineffective in ARS patients. However, oral GCS in combination with antibiotics may be modestly beneficial for short-time symptom relief in adults suffering from ARS, compared to antibiotics alone, with a number needed to treat of seven . Due to the small number of included studies (n = 5) and their methodological bias, a definite conclusion would only be justified if large controlled trials would be available. Given the self-limiting nature of ARS, the relatively small additional clinical benefit of adding GCS to antibiotics, and the potential AE’s, GCS should not be used routinely, but may be considered an option after informed discussion and shared decision making with the patient in the setting of severe pain.
Evidence level: B.
Benefits–harm assessment: AE’s of systemic GCS outweigh advantages of therapeutic value in mild and moderate disease.
Recommendation: Strong recommendation against when only mild to moderate symptoms. Option in patients suffering from severe headaches/symptoms when combined with antibiotics.
4. Chronic rhinosinusitis without nasal polyps
For clinical purposes, the definition of CRS includes nasal polyposis (NP) and currently it is still unclear why some CRS patients develop NP and others do not. CRSsNP is characterized by basement membrane thickening, goblet cell hyperplasia, fibrosis, subepithelial oedema and influx of inflammatory cells that are mainly of the neutrophilic subtype with a cytokine pattern deviated towards the Th1 subtype .
Based on available data, medical therapy for CRS should begin with daily application of intranasal steroids in conjunction with saline irrigation and subsequent therapies are based on the patient’s severity of symptoms and/or quality of life impairment .
There is limited data showing efficacy of oral GCS in CRSsNP and a systematic review analysed the available literature in 2011 .
No RCT investigated the effects of oral GCS in CRSsNP and only two retrospective case series in adults are available [47, 48] that both considered CRSwNP and CRSsNP patients, but sub-group analysis allowed an evaluation specific to CRSsNP (Table 4). Both retrospective studies investigated the effects of oral prednisone in conjunction with 1 month of oral antibiotics added to intranasal steroids and irrigations. Improved subjective and objective outcomes were seen after multimodality treatment schemes in both studies for CRSsNP. The study of Subramamian et al.  pooled both CRSwNP and CRSsNP patients and found that the CRSsNP patients had better outcomes than CRSwNP patients. Lal et al.  demonstrated that the CRSsNP patients showed total symptom resolution 2 months after treatment of 54.9% compared to 51% for the total CRS group. There are no studies available that investigated the benefits of systemic GCS in monotherapy in treating CRSsNP.
Because of a lack of RCTs or even prospective studies, evidence for clinical efficacy of oral GCS therapy in CRSsNP is Level 4 or 5 and in view of the AE discussed later on, not recommended for the management of CRSsNP.
Evidence level: C.
Benefits–harm assessment: AE’s of systemic GCS outweigh advantages of therapeutic value.
Recommendation: Recommendation against.
5. Chronic rhinosinusitis with nasal polyps
CRSwNP is different from CRSsNP by the presence of nasal polyps consisting of a large quantity of extracellular oedema with the presence of a dense inflammatory cell infiltrate [49, 50], which is characterized in about 80% of the Caucasian CRSwNP patients, by activated eosinophils [51, 52] and is associated with a predominant Th2 cytokine profile (IL-4, IL-5, IL-10, eotaxin) [53, 54].
A recent suite of Cochrane Reviews has considered the efficacy of interventions for CRSwNP. Two reviews were performed with respect to short-term oral GCS; one comparing oral GCS alone versus placebo or other treatment , and a second comparing oral GCS used as an adjunct to other treatments, versus control .
For oral GCS alone, 8 trials with a total of 474 participants, all of whom were adult patients CRSwNP, were identified [57,58,59,60,61,62,63,64]. All studies followed up patients to the end of the treatment course, and 3 followed patients for 3 to 6 months after completion. Patients receiving oral GCS achieved better quality of life (standardized mean difference (SMD) of − 1.24 95% CI − 1.92 to − 0.56, measured with RSOM-31), lower nasal symptom scores (SMD − 2.84, 95% CI − 4.09 to − 1.59) and greater polyp reduction (SMD − 1.21) than control groups at the end of the course of treatment. However, there was no difference between groups at 3 to 6 months after the course of treatment.
Treatment doses utilized in included studies included prednisone at 30 mg and reduced over 14 days, prednisolone at 60 mg reducing over 17 days, or at constant dosage of 50 mg or 25 mg for 14 days, or reducing dosages of MP over 20 days. Of the three studies that followed patients beyond the course of treatment, 2 prescribed ongoing intranasal GCS after completion of the systemic dose to both groups while one did not [58, 62, 63].
Included trials were considered to be at low risk of bias, but overall the quality of evidence was rated as low due to the small numbers of participants, heterogeneity of outcome measures and limited follow-up time in most studies.
Another trial considered oral GCS versus placebo as an adjunct to treatment with intranasal GCS in CRSwNP patients . This study recruited 30 participants and was considered at high risk of bias because of lack of blinding and lack of information on randomization. It reported greater reduction in polyp size in the active treatment arm (MD − 0.46, 95% CI − 0.87 to − 0.05).
One trial included in the Cochrane review of oral GCS as an adjunctive treatment recruited children  and is therefore considered later in this document.
Table 5 summarizes the evidence of these studies and provides a recommendation for the treatment of CRSwNP by systemic GCS. There is good evidence that systemic GCS are effective in the management of CRSwNP, at least in the short-term. However, considering the evolving understanding of CRSwNP and the chronicity of this condition, the short-lived benefits of systemic GCS therapy need to be balanced with the long-term potential AE’s which are discussed below. Therefore, systemic GCS should not be considered as a first line of treatment for CRSwNP. They can be used in a short course during 2–3 weeks as a last resort of treatment when combinations of other medications are ineffective.
Evidence level: A.
Benefits–harm assessment: AE’s of systemic GCS outweigh advantages of therapeutic value in the long-term, except in patients with severe symptomatology.
Recommendation: Strong recommendation against. Option for a short-term course in patients with severe symptoms and therapy-resistance.
A separate indication, for which oral GCS have been prescribed in CRSwNP patients, is the preoperative setting, in order to reduce perioperative bleeding and improve surgical conditions for the surgeon during endoscopic sinus surgery (ESS). Of the five studies that have been performed studying this topic in adults (Table 6), four are RCTs, however, their outcomes are not conclusive The study from Ecevit demonstrated a significant improvement on all perioperative variables studied (perioperative bleeding, visibility of the operative field, operative time, hospital stay) after a preoperative course of GCS in CRSwNP patients . However, while some other studies confirm a significant improvement of intraoperative bleeding time  or quality of the operating field  and surgical time , these differences were not found to be significant by their colleagues [67,68,69,70]. A recent meta-analysis reported on a significant reduction in operating time, perioperative blood loss and improved surgical field quality when patients were given preoperative steroid treatment, however, the result was mainly based on a large RCT reporting on intranasal GCS . Therefore, the use of oral GCS is currently not recommended in the preoperative setting of CRSwNP patients.
Evidence level: B.
Benefits–harm assessment: AE’s of systemic GCS outweigh advantages of therapeutic value.
Recommendation: Strong recommendation against.
6. Allergic fungal rhinosinusitis
Allergic fungal rhinosinusitis (AFRS) is a form of a non-invasive fungal rhinosinusitis and although it is not characterized by a specific phenotype, it seems to be an immunologically distinct subtype of CRS . The diagnosis is based on the criteria proposed by Bent and Kuhn: (1) production of eosinophilic mucin without fungal invasion into sinonasal tissue; (2) positive fungal stain of sinus contents; (3) nasal polyposis; (4) characteristic radiographic findings; and (5) allergy to fungi . In view of the locally aggressive character of the disease, the cornerstone of AFRS treatment is surgery . However, a lot of uncertainty remains concerning the medical options and postoperative therapy. Although no RCTs are available, we found four smaller studies that investigated the role of GCS in the management of AFRS mostly in adults (Table 7). Two prospective non-controlled studies examined the effects of GCS in a small number of AFRS patients without surgery [75, 76]. Woodworth showed a significant reduction in nasal endoscopy scores and inflammatory markers in the AFRS group after 18 days of prednisone . Landsberg  showed a more significant reduction in radiologic and mucosal scoring in AFRS patients compared to CRSwNP patients after 10 days of prednisolone. An older retrospective study from Kupferberg  in 26 AFRS patients, found that patients who received postoperative GCS showed more symptom improvement and less endoscopic disease compared to treatment with oral antifungals or no treatment. However, disease recurrence was noted after cessation of GCS. Similar findings were seen in a non-controlled retrospective study from Kuhn and Javer  who showed a maintenance of low endoscopic scores in AFRS patients, only after long-term GCS use. No AE’s were reported in any of the four studies. It has to be noted that all of these studies have a high risk of bias and the level of evidence for the use of oral GCS in AFRS patients remains at level C.
Evidence level: C.
Benefits–harm assessment: Balance of harm and benefit in patients with severe disease.
Recommendation: Option in patients with severe AFRS (severe symptoms and/or locally invasive disease) in conjunction with ESS.
7. Nasal manifestations of auto-immune disease
Many auto-immune disorders can involve the nose: thyroid auto-immunity, various vasculitis, Sjogren’s syndrome and sarcoidosis are the most frequently encountered, but other connective tissue diseases, such as systemic lupus erythematosus, polyarteritis nodosa, scleroderma and relapsing polychondritis can also have nasal symptoms .
GCS have been the major therapeutic option for some of these diseases as an immune suppressant for the past decades, probably being most effective where eosinophils, which are exquisitely steroid-sensitive, are involved . However, the quality of the evidence for their efficacy is poor, with studies mostly being reviews or open pilots, even in seminal trials such as those of Fauci for Wegener’s granulomatosis [80,81,82]. The reasons for this include not only time-hallowed use, but also difficulty in undertaking placebo-controlled trials in severe diseases, differences in the manifestations and their intensity between individual patients, disease complexity and plasticity and probably lack of interest in funding. This situation is now changing with the advent of newer therapies, particularly monoclonal antibodies, which are being trialled against older therapies including GCS .
Churg–Strauss syndrome, now called eosinophilic granulomatosis with polyangiitis (EGPA), is classically considered a Th2-mediated disease and affects sino-nasal mucosa in > 80% of the patients. Treatment must be tailored according to prognostic factors identified by the French Vasculitis Study Group . GCS alone are used for mild disease, high-dose GCS and cyclophosphamide is still the gold standard for severe cases , but biological agents such as rituximab or anti-IL-5 biologicals are promising, though costly, alternatives .
The hallmark of granulomatosis with polyangiitis (GPA; previously known as Wegener’s disease) is the coexistence of vasculitis and granuloma and again over 80% of patients show sino-nasal involvement . GCS alone are insufficiently effective: the induction treatment for severe GPA comprises GCS combined with another immunosuppressant, cyclophosphamide or rituximab. Once remission is achieved, maintenance strategy following cyclophosphamide-based induction relies on less toxic agents such as azathioprine or methotrexate.
GCS decrease the frequency, duration, and severity of flares in relapsing polychondritis, but do not stop disease progression in severe cases .
The presence of sino-nasal disease is associated with more severe sarcoidosis and the need for systemic GCS therapy .
Treatment for systemic lupus erythematosus (SLE) by various organ systems is not evidence-based beyond the usual first- or second-line treatment, however a recent meeting achieved consensus in several scenarios, including anti-phospholipid syndrome .
GCS, often combined with NSAIDs, are used in Sjogren’s syndrome to treat associated interstitial lung disease and/or sensorineural hearing loss .
Table 8 shows the evidence available for auto-immune disorders for which GCS are frequently used.
Evidence level: D.
Benefits–harm assessment: Depending on other organ involvement and severity.
Recommendation: Following the recommendation for the management of the specific auto-immune disease.
8. Sino-nasal pathology and concomitant asthma
Asthma is a chronic inflammatory disease of the lower airways involving inflammation of the bronchial mucosa, and variable obstruction of bronchi due to intrinsic/extrinsic stimuli, and leading to symptoms such as episodic breathlessness and wheezing with airway hyperresponsiveness to environmental stimuli . Since the introduction of the “United Airway Disease” concept , a large series of scientific publications from clinical epidemiology, pathophysiology, histology, and treatment outcomes has correlated asthma and upper airway disease. AR and asthma often coexist and AR is regarded as a risk factor for the development of asthma. Uncontrolled rhinitis impacts asthma control. Asthmatic patients have a higher CRS severity score than non-asthmatic patients, and more nasal polyps, indicative of a strong relationship between CRS severity and asthma . It has been reported that 20–60% of patients with CRSwNP have asthma [94, 95].
The first use of GCS to treat acute asthma exacerbation was in 1956 . Development of GCS that have less mineralocorticoid activity, like prednisone, and later those that have no mineralocorticoid activity, like dexamethasone, made steroid use more attractive therapies to use in asthma. Prescribing a short course of oral GCS following the treatment of acute asthma exacerbations was found to reduce the rate of relapse . However, courses longer than 5 days were not found to provide any additional benefit .
As described above, systemic GCS should not be considered as a treatment for AR. We could not identify any systematic review, randomized trial, or controlled study that evaluated the use of systemic GCS in patients with AR with concomitant asthma not responding to other therapy.
When analysing the evidence of oral GCS for patients with CRS and coexisting asthma there are a few randomized controlled trials and uncontrolled prospective interventional studies that evaluated the efficacy of different treatments (Table 9) of which only one looked at systemic GCS use. This study was carried out in adults by Ikeda et al.  and included 21 CRS patients with concomitant asthma. Fifteen patients underwent ESS, and 6 other patients remained on medical therapy. Seven patients of the ESS group showed a reduction in the need for GCS during the 6 months following surgery, whereas two patients were unchanged and two patients required larger dosages.
Generally, due to a lack of studies investigating the efficacy of GCS in asthmatics with CRS, the same rules apply as for non-asthmatic CRS patients. With regards to the morbidity and potential mortality that is associated with asthma, the use of GCS in asthmatic CRS patients should be directed in the first place by the severity of the lower airway symptoms.
Evidence level: D.
Benefits–harm assessment: AE’s of systemic GCS outweigh advantages of therapeutic value in the long-term, except in patients with severe symptomatology.
Recommendation: Recommendation against. Option in patients with severe symptoms and therapy-resistance.
Adverse effects of systemic GCS
Although GCS play a key role in the treatment of various inflammatory disorders, including chronic upper airway disease, a quite extensive range of potential AE’s is well-described in literature and the chance to develop these effects seems to increase with higher dose and longer duration of treatment [8, 100,101,102].
However, few studies have actually addressed the risk of common GCS-induced AE in upper airway disease. Also, most of the studies available on GCS focus on high dose or long-term usage for at least 6 months or even 1 year consecutively, which is mostly less relevant in the upper airway disease patient group.
In the following section, we aimed at summarizing the data of potential short- as well as long-term AE’s of systemic GCS treatments for rhinitis and/or rhinosinusitis in the adult population. Due to the heterogeneity in studies, treatment regimens and patient populations, we classified the side-effects according to the organ-system involved, but no further subdivision was made. When no studies were available for upper airway disease patients, a mention of studies investigating AE’s in similar patients (ophthalmologic, asthmatic) was made. Studies investigating side-effects in children will be discussed separately in the next chapter.
1. Hypothalamic–pituitary–adrenal-axis (HPA) inhibition
Reductions in the level of plasma cortisol are reported after one injection of GCS. They usually decrease in the first 2 weeks after steroid administration, but slowly return to normal after 3 weeks, as has been demonstrated in patients with AR . Hedner et al.  showed a minor HPA dysfunction in 14 allergic patients treated with a single intra-muscular injection of MP acetate, which returned completely to normal at 4 weeks post-injection. In a double-blind study by Laursen et al.  36 birch pollen allergic patients were treated with either a single injection of betamethasone dipropionate or oral prednisolone 7.5 mg/day for 3 weeks. Only the prednisolone treated patients showed reduction in plasma cortisol levels at 3 weeks.
Bonfils et al.  prospectively evaluated the HPA-axis in patients with CRSwNP (n = 46), who received at least three short courses of oral GCS in the last year (course 6–8 days, 1 mg/kg/day, mean duration of treatment 4.7 years, mean 6.8 courses/year, mean cumulative prednisone consumption 3,800 mg). The study demonstrated that 48% of patients had an asymptomatic adrenal insufficiency diagnosed with the Synacthen test.
2. Hyperglycemia and diabetes
A retrospective study based on Danish National Registries, including 47,382 AR patients, demonstrated that treatment with at least one consecutive injection of depot corticosteroid for 3 years on a row was associated with an increased risk of being diagnosed with diabetes later in life (RR 1.4) . The degree of new-onset diabetes associated with intermittent short-term oral GCS has not been clearly established.
In the same Danish epidemiological study, Aasbjerg et al.  showed that, compared to immunotherapy, treating AR with annual depot-steroid injections (i.e. at least one steroid injection in the pollen season for 3 consecutive years) was associated with increased risk of being diagnosed with osteoporosis (RR 1.2). The above-mentioned study from Bonfils, investigating the HPA-axis, prospectively evaluated the occurrence of osteoporosis in patients with CRSwNP (n = 46), receiving at least three short courses of oral GCS in the previous year. Osteopenia of the proximal femur was present in 40.5% and osteoporosis was present in 54% . Rajeskaran et al.  retrospectively evaluated the risk of osteoporosis in patients with CRS (n = 176), who received oral GCS ≥ 5 mg daily for 3 consecutive months any time in the past. Overall, low bone mineral densities (BMD; osteopenia or osteoporosis) was 38.6%. These studies were recently evaluated in a systematic review which was unfortunately not able to quantify the overall risk of osteoporosis induced by oral GCS for CRSwNP, due to the low number of studies .
The effects of short-course oral GCS on bone mineral density (BMD) have also been investigated in a 4-year longitudinal small study in asthmatic patients. Asthmatic patients receiving frequent short courses of oral GCS (i.e. > 2.5 courses/year; n = 9) compared to those receiving sporadic courses (i.e. ≤ 2.5 courses/year; n = 26) revealed a greater loss of lumbar BMD (T-score 82.0% versus T-score 77.7%) in the frequently treated group . Also, a lower Z-score of 93.1% was demonstrated in frequent short courses, versus the sporadic courses that did not show a lower Z-score than the normal population values (Z-score 100.1%).
4. Avascular necrosis
With regards to avascular necrosis of the femoral head in patients treated with systemic GCS for upper airway disease, we found 1 case report of Nasser et al.  describing a single case with severe hay fever that was given at least one depot corticosteroid injection each year for 11 years, leading to avascular necrosis.
More individual case reports highlight the relationship between the use of systemic GCS and avascular necrosis. The risk to develop osteonecrosis seems to be dependent on the prescribed dose, the cumulative dose and route of administration, as well as underlying disease states (SLE patients seem to be particularly at risk) [112,113,114].
5. Gastrointestinal disturbances and peptic ulceration
In a randomized double-blind placebo-controlled study by Kirtsreesakul et al.  112 patients with CRSwNP used either 50 mg prednisone or placebo for 14 days and reported significantly more (mild) gastrointestinal disturbances and dyspepsia in the prednisolone treated group. In a double-blind placebo-controlled trial by Venekamp et al.  174 adult patients clinically diagnosed with ARS received either 30 mg/day prednisolone or placebo for 7 days. The incidence of gastrointestinal complaints did not differ between treatment groups.
In a large nested case–control analysis based on the UK General Practice Research Database, 2105 cases of upper gastro-intestinal complications were compared to 11,500 controls and then evaluated for exposure to certain drugs e.g. corticosteroid use. The adjusted OR for current use of oral GCS was 1.8 (95% CI 1.3–2.4) for upper gastrointestinal complications overall . No statistically significant difference could be objectified for lower versus higher dosage of GCS. To our knowledge no studies in upper airway disease patients report on systemic steroid treatment and peptic ulceration.
6. Ocular adverse effects
GCS have been described to induce the formation of posterior subcapsular cataract or glaucoma. The risk for patients using repeated (short) courses of systemic GCS for upper airway disease is currently unknown.
There is evidence in rheumatoid arthritis patients that this risk is enhanced after therapy lasting more than 1 year . Another study by Huscher et al.  analysed dose-related patterns of self-reported symptoms from 1066 patients with RA with ongoing long-term (> 6 months) systemic GCS. These symptom patterns were compared to non-users (no systemic GCS for at least 12 months). The prevalence of self-reported cataract was higher for all dosages of GCS, whereas the prevalence of self-reported glaucoma was only increased in those taking > 7.5 mg/day (6.6% users vs. 2.7% non-users).
A meta-analysis of randomised controlled clinical trials in which patients were randomised to treatment with or without systemic GCS (n = 4198) showed that the rate of infection was not significantly increased in patients who were given a mean dose of less than 10 mg/day of prednisone or a cumulative dose of less than 700 mg . This meta-analysis included a wide variety of diseases warranting systemic GCS. The true risk of developing infection in patients using short courses for upper airway disease remains uncertain.
8. Local adverse effects of steroid-injections
We found one case report on gluteal subcutaneous atrophy that was seen after a depot steroid injection of triamcinolone for AR . A study of Laursen et al.  investigated specifically the reporting of all AE’s related to GCS injections for AR to the ‘Danish Register for the Side-Effects of Drugs’ and evaluated the reported events consecutively for a 10-year period. The study demonstrated that one out of 11,785 injections came with any local AE. Most AE’s were reversible and primarily skin related, such as skin atrophy.
9. Cardiovascular adverse effects
A population-based cohort study in 68,781 GCS users and 82,202 non-users showed that patients exposed to dosages of GCS > 7.5 mg of prednisolone/day (or equivalent) during 1 to 5 years of follow-up, had substantially higher rates of myocardial infarction, heart failure, or cerebrovascular disease (adjusted RR of 2.56; 95% CI 2.18–2.99). The risk was not increased in patients using < 7.5 mg prednisolone equivalent daily .
Another large, retrospective case–control study with data extracted from the General Practice Research Database (1988–1997) showed in over 100,000 individuals that the use of oral GCS comes with a 25% higher risk of any cardiovascular or cerebrovascular outcome compared to controls. Current use (in the 3 months before the registration of an event) and highest average daily dose give a much stronger association. Current use is also associated with a significantly increased risk of heart failure (adjusted OR of 2.66; 95% CI 2.46–2.87) and ischemic heart disease (OR of 1.20; 95% CI 1.11–1.29), but not ischemic stroke or transient ischemic attack. Cardiovascular risk showed a clear dose–response relationship .
To our knowledge, the risk in patients using GCS for intermittent short courses is unknown.
10. Neuropsychiatric effects
A study from Hissaria et al.  investigating 40 CRSwNP patients treated with 50 mg of prednisolone daily for 14 days or placebo, found that sleep disturbances were reported as a significant prevalent AE (40%) compared to placebo (10%). Mood disturbance were more frequently reported, but not significantly different from placebo (25% vs. 10%).
In the above-mentioned controlled trial by Venekamp et al.  studying ARS patients treated with 30 mg/day prednisolone or placebo for 7 days, the incidence of mood or sleep disturbance did not differ between treatment groups.
Naber et al.  showed in a prospective uncontrolled study in ophthalmologic patients receiving systemic GCS (n = 50) that 26–34% of patients developed (hypo)mania and 10–12% developed depression syndromes when using an initial 119 ± 41 mg/day MP or fluorcortolone, tapered to 75 ± 22 mg/day at 8 days. The onset of symptoms was within 3 days of use and there was no correlation between daily dose and daily ratings of mood. Brown et al.  showed in 32 asthmatic patients using prednisone (mean course 13.9 days, mean dose of 36.9 mg/day) a highly significant increase in self-reported mania, but no increase in depression during the first 3–7 days of therapy. Mood changes returned back to normal after discontinuation of therapy.
11. Cushingoid features
We found no studies investigating Cushingoid appearance in rhinitis/rhinosinusitis patients treated with GCS and only a few studies addressed the risk of intermittent short courses of GCS and weight gain.
A randomised controlled trial by Campieri et al.  in patients with active Crohn’s disease demonstrated that 38% of patients on a regimen of prednisolone tapered over 12 weeks (40–45 mg) developed a ‘moon face’. Mean body weight increased with 2.1 kg after 8 weeks of treatment. Bar-Meir et al.  showed that patients receiving 8 weeks of prednisone developed a moon face in 33% versus 16% in patients receiving a similar treatment with budesonide.
Benefit and risk of use of GCS in pediatric populations
Inflammatory diseases of the nose and paranasal sinuses in children include upper respiratory tract infections, chronic rhinitis, ARS and CRS. ARS is defined as increase of sinonasal symptoms after 5 days of infection or persistent symptoms after 10 days and characterized by the sudden onset of two or more of the symptoms (discoloured nasal discharge, nasal blockage/obstruction/congestion, cough at daytime and night-time) for less than 12 weeks . Bacterial infection is expected when at least 3 symptoms are present among which discoloured discharge, purulent secretion in nasal cavity, severe local pain with a unilateral predominance, fever, elevated C-reactive protein or erythrocyte sedimentation rate, and double sickening (i.e. deterioration after an initial milder phase of illness) . The definition of pediatric CRS differs from adult CRS by the symptom of cough  and is defined by the presence of two or more symptoms, one of which should be either nasal obstruction or nasal discharge (anterior or posterior) with/without facial pain/pressure with/without cough, lasting for at least 12 weeks . The diagnosis is confirmed by either nasal endoscopy showing edema, purulent drainage or nasal polyps in the middle meatus or CT scan showing ostiomeatal complex or sinus opacification. Of note, the presence of nasal polyps is much less common in pediatric patients than in adult patients with CRS .
1. Efficacy of systemic GCS in pediatric CRS and ARS
Three clinical trials can be found in literature that investigated the use of oral GCS in the pediatric rhinosinusitis population, of which only one is controlled (Table 10).
This controlled study involved 48 children (mean age 8 years) with CRSsNP  and investigated the effect of oral GCS as an add-on to antibiotics. 22 participants received either 30-day course of oral amoxicillin–clavulanate and 15-day course of oral MP and 23 participants received only antibiotics and a placebo. The mean change of total symptom score and CT score was significantly higher after treatment with oral GCS and antibiotics compared with placebo and antibiotics (P < 0.001). There was also a significant beneficial effect of oral GCS in cough, nasal obstruction and post-nasal drainage symptom scores. Complete clinical recovery after 30 days of treatment was obtained in significantly more subjects receiving MP (P < 0.005). Recurrence of symptoms 6 months after the end of treatment was not statistically significant between the groups.
Additionally, a retrospective study involving 35 young CRS patients (1–21 years) undergoing serial sinus CT scans due to medical reasons, evaluated Lund Mackay ostiomeatal complex score in relation to three different treatment schemes  antibiotics, intranasal topical GCS and oral systemic GCS. The data suggested that the use of systemic GCS was associated with a significant increase in the likelihood of radiologic improvement. The retrospective study design, the small and heterogeneous population, heterogeneous treatment modalities, and the lack of adjustments, limit the possibilities to assess clinical significance of the findings.
A second uncontrolled study  evaluated cytokine pattern of 30 asthmatic CRS patients (4–12 years) before and after the treatment of amoxicillin–clavulanate, fluticasone propionate aqueous nasal spray and a short course of oral deflazacort. After the treatment, endoscopic resolving of mucopurulent discharge was detected in 25/30 children, the median concentration of IL-4 decreased significantly in all subjects, and the median IFN-γ concentration increased significantly only in the atopic subgroup (N = 16). The uncontrolled study design and uncertainty whether the patients used prescribed drugs, limits the possibilities to assess effect of systemic GCS.
2. Harm of GCS in children
There is limited knowledge of risks of using systemic GCS in pediatric CRS or ARS compared to pediatric asthma. As an example, the Childhood Asthma Management Program trial followed the annual bone mineral accretion of 877 children (5–12 years) with mild-to-moderate asthma [128, 129]. Oral GCS bursts produced a dosage-dependent reduction in bone mineral accretion (0.052, 0.049, and 0.046 g/cm2 per year) and an increase in risk for osteopenia (10%, 14%, and 21%) for 0, 1–4, and ≥ 5 courses, respectively, in boys. The authors conclude that multiple oral GCS bursts over a period of years can produce a dosage-dependent reduction in bone mineral accretion and increased risk for osteopenia in children with asthma. 780 children with asthma were followed for a mean of 4.3 years and it was shown that boys with lower vitamin D levels are significantly more susceptible to the negative effects of GCS on bone mineral accretion over time . Regarding studies investigating GCS AE’s in upper airway disease, the trial from Ozturk also looked at self-reported AE’s during the 15-day course of oral MP . In this trial no clinically significant AE’s were reported. At the end of the treatment, the mean weight change did not differ statistically significantly between the groups. No data of monitored AE’s, nor that of long-term outcomes, nor that of bacterial culture were available in this study.
A systematic review has been performed to determine the most common and serious drug-related AE of long courses of oral GCS in children . Literature search of several databases was performed to identify all studies in which systemic GCS had been administered to pediatric patients ranging from 28 days to 18 years of age for at least 15 days of treatment. The group found 91 studies that represented a total of 6653 children and contained reports of 4124 adverse drug reactions, the majority in patients with leukaemia, haemangioma and asthma. The three most frequent adverse drug reactions were weight gain (22.4%), Cushingoid features (20.6%) and growth retardation (18.9%). Increased susceptibility to infection was the most serious adverse drug reaction. 24 children died from infections, 10 from varicella zoster.
There is insufficient knowledge of the effect and harm of short-term systemic GCS courses in pediatric CRS patients. However, based on studies on pediatric asthma, a single short-term systemic GCS course could be considered in pediatric patients suffering from CRS that is not responding to other therapies such as intranasal GCS, antibiotics, supporting therapy (saline douchings, decongestants) and adenoidectomy. It is mandatory to perform more powered; randomized placebo-controlled clinical trials of pediatric ARS and CRS with long-term follow up and report of AE’s.
Evidence level: B.
Benefits–harm assessment: AE’s of systemic GCS outweigh advantages of therapeutic value in mild and moderate disease.
Recommendation: Strong recommendation against. Option in patients suffering from very severe and therapy-resistant disease, in combination with antibiotics.
Health economic considerations related to GCS use
Besides clinical consequences, systemic GCS use may also have some health economic implications that should be considered in its benefit-harm trade-off. Generally, the direct costs for systemic GCS are among the lowest quartile of prices of medications available worldwide. However, the indirect costs due to adverse events of (especially long-term, high-dose) systemic GCS use could be more substantial. Two industry-funded studies have assessed the cumulative economic burden of GCS associated adverse events regardless of dose, duration or indication [131, 132]. Manson et al.  identified 63 studies in which 21 different GCS adverse events were reported with increased fracture risk, gastric and psychiatric conditions being the most frequent ones. Their economic analysis from the UK perspective revealed that taking oral GCS would result in an additional annual cost of at least £165 for treatment of all steroid related adverse events. One study specifically assessed the economic impact of oral GCS on related fractures where hip, vertebral and forearm fractures costed £10,761, £1976 and £863 respectively. Notably, only three studies focused on patients with allergic rhinitis and/or skin diseases and none specifically on rhinosinusitis. A second review  included 47 studies reporting on adverse events of systemic GCS. Subsequently, a cost analysis was undertaken from the US perspective. It was unclear whether any patients with allergic rhinitis or rhinosinusitis were included. Most frequently reported adverse events were psychiatric and gastric conditions, infections and fractures. The authors estimated the potential cost reductions if the daily GCS dose would be reduced. Regarding avoidance of fractures, they estimated that 96 fractures per 10,000 elderly patients could be avoided summing up to $1.76 million ($176 per patient). The findings from both reviews should be interpreted with caution given the heterogeneous and often low-quality and retrospective nature of the studies included and the difficulty in excluding confounding due to underlying disease activity. Besides these two reviews with no particular disease focus, some studies focused on the costs of systemic GCS related adverse events within a specific population such as asthma [133, 134] or rheumatologic diseases [135, 136] and found increased costs in the GCS exposed populations. None were specifically focusing on rhinitis or rhinosinusitis. We conclude that given the limited amount of current evidence, more studies on the economic burden and cost-effectiveness of systemic GCS use in rhinitis and rhinosinusitis treatment are required.
Alternatives for GCS in upper airway disease
In both rhinitis and rhinosinusitis patients, systemic GCS treatment is in general reserved for those in whom disease control cannot be obtained by baseline medical therapy (intranasal steroids and antihistamine/antileukotrienes for AR  and intranasal steroids and antibiotics for ARS/CRS ). However, in AR, allergen immunotherapy (AIT) is an alternative option for patients suffering from uncontrolled symptoms. AIT modifies the natural disease course and recent well-performed trials have demonstrated reductions in both symptoms and use of rescue medication in patients with AR for both the subcutaneous as well as sublingual administration route . One study from 1969 compared the efficacy of one depot MP injection with a pre-seasonal administration of an alum-precipitated pyridine extracted grass pollen immunotherapy and found similar results between the two groups in terms of symptom improvement . However, this paper already stated that the potential AE’s of MP do not justify the use of systemic GCS for a condition such as AR. One large Danish registry study including almost 40,000 AR patients actually showed the oral steroid-sparing effect of subcutaneous AIT (SCIT) for seasonal AR with an annual mean of 1.0 steroid injections in patients receiving SCIT versus a mean of 1.6 injections in the non-SCIT group. Of the SCIT-treated individuals, 84% did not need GCS at all after SCIT treatment . Aasbjerg looked at the same registry to compare AE’s and found that AR patient treated with systemic GCS showed more diabetes and osteoporosis than those treated with AIT as mentioned above .
For CRS patients, current alternatives for oral GCS during exacerbations consist of antibiotics and when patients remain uncontrolled, sinus surgery is the next step in line . However, studies investigating biological agents that are available for the treatment of asthma and/or other allergic diseases, have shown very beneficial effects in CRSwNP patients  but are currently only available for those with severe concomitant asthma.
Gevaert et al.  extrapolated results from different studies to compare the efficacy of different treatments in CRSwNP patients. They found a beneficial effect on NP score of doxycycline that was comparable to MP after 8 weeks. Also, omalizumab and mepolizumab treatment had better results on NP score than the oral GCS treatment. Omalizumab and mepolizumab additionally showed better symptom control compared to MP. Currently only data on the oral steroid-sparing effects of mepolizumab and benralizumab in asthma are available , but with the increased implementation of these therapies in CRSwNP, studies evaluating the steroid-sparing effect for upper airway exacerbations will be necessary.
When disease control in upper airway disease cannot be obtained with intranasal steroids or other medical treatment prescribed by the respective guidelines, severe cases of AR, ARS, AFRS and CRSwNP can be treated with a short-term course of systemic GCS to improve symptoms. This manuscript provided an overview of the current evidence for the beneficial effects of systemic GCS in the different subtypes of upper airway diseases, as well as in the pediatric age group and aimed at providing recommendations for the specific disease entities.
However, multiple AEs have been widely described and therefore physicians should be aware of the risks associated with oral GCS and make a good risk–benefit assessment prior to prescribing them. In this paper, we summarize these potential AEs; given the current evidence in literature, a clear assessment of the risks associated with oral steroid use in upper airway disease cannot be made. Currently available data show a wide variability in diseases, patients, duration of treatment and follow-up and therefore this topic needs to be addressed in a systematic way in order to provide a substantiated recommendation for the use and dosing of oral GCS in the upper airway disease population.
We can conclude that, although some beneficial effects of systemic GCS have been demonstrated in chronic upper airway diseases such as AR and CRSwNP, systemic GCS should not be considered as a first line of treatment for these disease types.
Availability of data and materials
allergic fungal rhinosinusitis
bone mineral density
chronic rhinosinusitis with nasal polyps
chronic rhinosinusitis without nasal polyps
eosinophilic granulomatosis with polyangiitis
endoscopic sinus surgery
granulocyte-macrophage colony-stimulating factor
granulomatosis with polyangiitis
glucocorticoid receptor α/β
intercellular adhesion molecule
non-steroidal anti-inflammatory drug
randomised controlled trial
systemic lupus erythematosus
tumor necrosis factor α
vascular cell adhesion molecule
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This work was funded by an EAACI Task Force budget.
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GS: Honoraria for articles, speaker and advisory boards: ALK, Astra Zeneca, Brittania Pharmaceuticals, Capnia, Church & Dwight, Circassia, Groupo Uriach, GSK, Meda/Mylan, Merck, MSD, Ono Pharmaceuticals, Oxford Therapeutics, Sanofi-Aventis, UCB. Travel funding: ALK, Bayer, GSK, Meda. Chair of BSACI Rhinitis guidelines, EAACI Ethics Committee, Rhinology & Laryngology Research Fund. Chair of Data Monitoring Board for Acarizax paediatric AR trial.
CH: Reimbursed for Advisory Board work for sanofi, Smith and Nephew and speakers bureau for Medtronic.
CB: Advisory board of Sanofi, GSK, Novartis, Astra-Zeneca, Mylan and reimbursed for presentations and travel.
TVZ: Consultant for Medtronic and 3NT.
STS: has acted as paid consultant for ERT and Roche Products. All these are outside the submitted work.
All other authors declare that they have no competing interests.
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Hox, V., Lourijsen, E., Jordens, A. et al. Benefits and harm of systemic steroids for short- and long-term use in rhinitis and rhinosinusitis: an EAACI position paper. Clin Transl Allergy 10, 1 (2020). https://doi.org/10.1186/s13601-019-0303-6