Question

Drugs used to quickly reduce the symptoms of allergy
(i) Histaminic drugs
(ii) Adrenaline
(iii) Steroids
(iv) ɑ-interferons

• A. ii and iii
• B. i and ii
• C. i, ii and iv
• D. i, ii and iii

Answer 1

The correct option is A ii and iii

• Allergy or hypersensitivity is the heightened immunological response that is manifested by the body against certain antigens which are specifically called allergens.
• Upon exposure to allergens, the sensitised person produces hypersensitive reactions by release of histamine from mast cells and the production of IgE antibodies from B lymphocytes.
• Histamine results in dilation of arteries to increase blood flow to the affected area.

Allergic reactions often result in -

● Rashes all over the body.
● Runny nose and watery eyes.
● Swelling of face and tongue.
● Laboured breathing due to choking of throat as the tissue around mouth and tongue swell up.
● Drop in blood pressure due to dilation of arteries.
● Rapid heartbeat.

Drugs to reduce allergic symptoms:-

Antihistaminic drugs, steroids and adrenaline are the drugs that are administered to reduce the intensity of allergic symptoms.

Interferons are administered to treat viral infections.