CLINICAL MEDICINE

Detailed explanation-1: -Allergies, on the other hand, are not contagious but can be very bothersome. Even people who grew up without allergies to pollen or other triggers can develop them at any time.

Detailed explanation-2: -Allergens are not infectious agents. Allergies are not passed on to other people through close contact or by sharing body fluids.

Detailed explanation-3: -Allergies are one of the most common chronic diseases. A chronic disease lasts a long time or occurs often. An allergy occurs when the body’s immune system sees a substance as harmful and overreacts to it. The substances that cause allergic reactions are allergens.