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Allergy

An allergy is a reaction by your immune system to something that does not bother most other people. People who have allergies often are sensitive to more than one thing. Substances that often cause reactions are:

Normally, your immune system fights germs. It is your body's defense system. In most allergic reactions, however, it is responding to a false alarm. Genes and the environment probably both play a role.

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Results 1 - 10 of 2,075 for hypersensitivity
  1. Allergy (National Library of Medicine)  
    An allergy is a reaction by your immune system to something that does not bother most other people. People who have allergies often are sensitive to more than one thing. ...
  2. Food Allergy (National Library of Medicine)  
    What is a food allergy? A food allergy is an abnormal immune system reaction to certain foods. Your immune system normally protects you from germs. ...
  3. Hay Fever (National Library of Medicine)  
    ... and throat. This can trigger a type of allergy called hay fever. Symptoms can include: Sneezing, often ... to use distilled or sterilized water with saline. Allergy shots can help make you less sensitive to ...
  4. Latex Allergy (National Library of Medicine)  
    ... make you more likely to develop a latex allergy. If your immune system detects the protein, a ...
  5. Allergy Blood Test What is an Allergy Blood Test? An allergy blood test measures a substance called immunoglobulin E (IgE) in your blood. IgE is an antibody that your ...
  6. Allergy Skin Test What is an allergy skin test? An allergy is an overreaction, also known as a hypersensitivity, of the body's immune system . Normally, your immune system works ...
  7. Food Allergy Testing What is food allergy testing? A food allergy happens when your immune system - your body's defense against germs - overreacts to a certain food as if it ...
  8. Allergy skin tests are used to find out which substances cause a person to have an allergic reaction . These substances are called allergens.
  9. A food allergy is a type of immune response triggered by eggs, peanuts, milk, shellfish or some other specific food. ... gluten intolerance or celiac disease ) A true food allergy is much less common. The immune system normally ...
  10. Chlor-Trimeton® 12 Hour Allergy ... Chlor-Trimeton® 4 Hour Allergy ... Chlor-Trimeton® 8 Hour Allergy ... Chlor-Trimeton® Allergy Syrup ... Teldrin® Allergy ... nose or throat; and runny nose caused by allergies, hay fever, and the common cold. Chlorpheniramine helps ...
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