Hives
Hypersensitivity
Hyposensitivity
IgE
Immunoglobulin
Immunotherapy
Inflammation
Mast cell stabilisers
Mildew
Mucus
Oedema
Pimple or papule
Pollen
Pruritus
Pseudo-allergy
Rash
Rhinitis
Sensitisation
Sinusitis
Theophylline
Trachea
Urticaria

Anemophilous pollens

are the more allergenic and, because they are carried on the wind, they can travel over very long distances. This is why some people suffer from allergic reactions to the pollen of plants which do not grow in the immediate area.