What are allergies ?
- Allergies are your body’s reaction to a normally harmless substance.
- These substances are usually called allergens.
- If you have an allergy to a particular allergen, your body will overreact to its presence in your body.
- Allergens can enter the body by the airways (breathing an allergen), skin (touching an allergen), gastrointestinal tract (ingesting an allergen) or by entering the circulatory system (allergen entering the bloodstream).