Question

Which of the following disease is generated by allergens..?

A.skin cancer
B.Hay fever
C.Enteric fever
D.goitre

Answer 1

skin cancer us caused

Answer 2

Answer:

The correct answer is : B. Hay fever.

Explanation:

• Hay fever, alternately called, allergic rhinitis.
• The immune system gets activated in case of allergy.
• In this disease there is inflammation of the nasal epithelium, in response to pollen grains.
• The pollen grains act as foreign materials to the tissue-borne mast cells located in the nasal epithelium.
• The mast cells get activated and secrete histamine, prostaglandin and other allergy-inducing molecules.
• These molecules act on the neurons and smooth muscle cells thereby inducing inflammation, itch, pain and irritation.
• In case of acute allergic reactions, they can activate the eosinophils, neutrophils and macrophages, which can cause tissue damage.