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Table 2 Encoding of symptoms for self-reported hypersensitivity reactions in the food hypersensitivity questionnaire [20]

From: Prevalence of food hypersensitivity in relation to IgE sensitisation to common food allergens among the general adult population in West Sweden

Code Meaning
skin Symptoms from the skin (urticaria, eczema, angioedema, flush, itching, tingling, skin pain, papules, redness etc.)
gi Abdominal pain, diarrhoea, flatulence, reflux, vomiting, constipation, oral allergy syndrome (OAS) etc.
airup Symptoms from the upper airways –nose (rhinitis, nasal congestion, nasal itching, sneezing, red nasal papules), eyes etc.
airlo Lower airways—respiratory symptoms (heavy breathing, difficulty getting air, wheezing, cough, chest pressure, bronchospasm, hoarseness, mucus in the throat)
circ Palpation, fainting, dizziness
cns Headache, confusion
ana Anaphylactic reactions
gen General symptoms such as tiredness, feeling ill
oth Other (for example ear itching, gallstone)
not Do not eat
unk Unknown, uncertain whether hypersensitive or not