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Allergens are foreign substances that cause an allergic reaction in the body, allergy symptoms occur when immune system overreacts to something that is harmless but triggers a reaction in the blood.
Food, skin, dust, insect, pet, pollen and drug are the common types of allergies.
In allergic individuals, the body recognizes the foreign substance, and the allergic part of the immune system generates a response.
Avoiding exposure to things you are allergic to is the best way to control the symptoms. Immunotherapy may be an option for people with severe and persistent allergies who are unable to control their symptoms.
The treatment involves being given occasional small doses of the allergen; either as an injection, or as drops or tablets. The treatment will strengthen the body to get used to the allergen so it doesn’t react to it so severely again.
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