Allergies arise when immune system reacts to foreign body.
The immune system produces substances known as antibodies that protect us from unwanted invaders which could make us sick or cause an infection. When one comes into contact with the allergen, the response of the immune system can inflame skin, sinuses, airways or digestive system.
The severity of allergies varies from one person to another and can range from trivial irritation to a potentially life threatening emergency. While most allergies cannot be cured, a number of treatments can assist get rid of allergy symptoms