Agents which produce allergy are known as:

The use of anti-histamine,adrenaline,and steroids quickly reduces the symptoms of:

Antihistamine pills are used to nullify:

Antihistamines and steroids are administered to treat which of the following?

Hypersensitivity to an allergen is due to

$A$ person is suffering from frequent episodes of nasal discharge,nasal congestion,reddening of eyes,and watery eyes. These are the symptoms of