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
A group of drugs that widen the airways of the lung, used in asthma.