IMMUNOLOGY

Detailed explanation-1: -Allergies occur when the body’s immune system misinterprets a foreign but otherwise harmless substance as harmful and then attempts to remove it from the body. The symptoms that occurs as a result of an over-zealous immune system is called an allergic reaction. The things that trigger the reaction are called allergens.

Detailed explanation-2: -Type I hypersensitivity is a type of allergic reaction that occurs when the immune system overreacts to an otherwise harmless substance, such as pollen, dust, or certain foods. It is characterized by the rapid release of immunoglobulin E (IgE) antibodies in response to the allergen.

Detailed explanation-3: -Allergic reactions begin in your immune system. When a harmless substance such as dust, mold, or pollen is encountered by a person who is allergic to that substance, the immune system may over react by producing antibodies that “attack” the allergen.

Detailed explanation-4: -An allergy starts when your immune system mistakes a normally harmless substance for a dangerous invader. The immune system then produces antibodies that remain on the alert for that particular allergen.

Detailed explanation-5: -Asthma. The response in your lungs can cause coughing, wheezing, and trouble breathing. Eczema. An allergen causes an itchy rash known as atopic dermatitis. Allergic rhinitis.