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Table 1 Studies investigating systems involved in chronic urticaria

From: Is chronic urticaria more than skin deep?

Keywords Search in Pubmed, number of publications Additional studies found in the reference list Search in Google Scholar Total number of studies included
‘Urticaria keyword’ Relevant articles taken into consideration
Review articles Case reports/letters Original articles
Systemic symptoms 136 0 0 0 0 0 0
Systemic involvement 48 0 0 0 0 1 1
Systemic complaints 2 0 0 1 0 2 2
Systemic manifestations 49 0 0 0 0 0 0
Organ involvement 22 0 0 0 0 0 0
Pulmonary system
 Pulmonary involvement 5 0 0 0 0 2 2
 Asthma 105 0 1 1 1 0 1
 Bronchial hyperreactivity 1 0 0 1 0 6 2
 Bronchial hyperresponsiveness 2 0 0 2 0 5 2
 Upper respiratory tract 1 0 1 0 0 0 1
 Larynx 0 0 0 0 0 1 1
 Pharynx 0 0 0 0 0 2 0
 Nose 0 0 0 0 0 1 1
 Eye 4 0 0 0 0 0 0
Neurological system
 Nervous system 2 0 0 0 0 2 2
 Brain 91 0 0 1 0 0 1
 Cerebellum 3 0 0 1 0 1 1
 Central nervous system 0 0 0 0 0 0 0
 Peripheral nervous system 0 0 0 0 0 0 0
Cardiovascular system
 Cardiac system 0 0 0 0 0 0 0
 Cardiac symptoms 0 0 0 0 0 0 0
 Cardiologic symptoms 0 0 0 0 0 3 2
 Cardiac involvement 1 1 0 0 0 1 1
 Heart 0 0 0 0 0 3 0
 Kounis syndrome 11 0 5 0 2 4 5
 Hypertension 85 0 0 2 0 2 2
 Blood vessels 44 0 0 0 0 0 0
 Veins 0 0 0 0 0 0 0
 Arteries 0 0 0 0 0 5 3
 Lymphedema 5 0 0 0 0 0 0
 Lymphadenopathy 57 0 0 0 0 0 0
 Haematological system 0 0 0 0 0 0 0
Gastrointestinal system
 Gastritis 60 0 0 1 0 2 3
 Gastrointestinal symptoms 0 0 0 0 0 1 1
 Intestines 5 0 0 0 0 3 2
 Gut 35 0 0 1 0 2 1
 Duodenum 10 0 0 2 0 2 1
 Esophagus 0 0 0 0 0 0 0
 Liver 238 0 2 0 0 2 2
 Pancreas 9 0 0 3 0 1 1
 Gallbladder 2 0 2 0 0 2 0
Genitourinary system
 Genitourinary system 0 0 0 0 0 1 1
 Fertility 4 0 0 0 0 0 0
Musculoskeletal system
 Joints 33 0 0 0 0 2 2
 Arthralgia 133 0 1 0 0 1 0
 Skeletal system 5 0 0 0 0 0 0
 Bones 20 0 1 0 1 0 2
Renal system
 Renal system 0 0 0 0 0 0 0
 Kidneys 17 0 0 0 0 0 0
 Renal involvement 10 0 0 0 0 0 0
 Renal functions 1 0 0 0 0 0 0