Acarids
Aeroallergen
Allergens
Allergic reactions
Anemophilous pollens
Anti-leukotriene
Antibodies
Antihistamine
Atopic
Bronchodilator
Congestion
Conjunctivitis
Corticosteroid
Dermatitis
Desensitisation
Dyspnoea
Eczema
Erythema
Graminaceae
Hayfever
Herbaceous
Histamine

Hypersensitivity

Excessive sensitivity to certain external factors (over-reaction by immune system causing allergic symptoms).