Atopic dermatitis
Areas of scaly, erythematous and itchy eczematous rash primarily of the face and scalp, behind the ears and at the flexural folds, diagnosed by a doctor. Only eczema localized to at least two typical areas and chronically relapsing with duration of at least 3 months were recorded.
Asthma
Diagnosed by a physician by at least three episodes and more than two of the symptoms: wheeze, cough or dyspnea, not only associated with respiratory infections, responding to bronchodilator and/or inhaled corticosteroid treatment. From school age, the diagnosis was confirmed by variation in lung function spontaneously or due to therapy, for example an increase in FEV1 ≥12% after inhalation of a beta-2-agonist and/or long term profylactic inhaled steroid.
Rhinoconjunctivitis
Physician diagnosed typical symptoms lasting at least 1 month or recurring on exposure to the same allergen.