A skin allergy is when skin becomes irritated because the immune system reacted to something that is usually harmless.This is called an allergic reaction. An allergic reaction can cause rash, itching, burning, redness, bumps, hives, and swelling. Many different allergens can cause a reaction. The best way to prevent allergic skin reactions is to try to find out what allergen causes the reaction and avoid it. Consider potential allergens that go directly on the skin, such as soap, shower gels, hair products, makeup, lotions, and deodorants.
Frequently Asked Questions
One of the marvels of the human body is that it can defend itself against harmful invaders such as viruses or bacteria. In some people, the body reacts to harmless substances such as dust, mold or pollen by producing an antibody called immunoglobulin E (IgE). When patients with one of the allergic diseases (such as rhinitis or asthma) are exposed to these substances, the immune system then rallies its defenses, launching a host of complex chemical weapons to attack and destroy the supposed enemy. In the process, some unpleasant and, in extreme cases, life-threatening symptoms may be experienced.
Hundreds or even thousands of ordinary substances can trigger allergic reactions. These are called “allergens.” Among the most common are plant pollens, molds, household dust (dust mites), animal dander, industrial chemicals, foods, medicines and insect stings. An allergic reaction may occur anywhere in the body, but usually appears in the skin, eyes, lining of the stomach, nose, sinuses, throat and lungs — places where special immune system cells are stationed to fight off invaders that are inhaled, swallowed or come in contact with the skin.