Skip navigation

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.

(Read more)
Illustration of a mast cell releasing histamine
Results 1 - 10 of 3,074 for allergy
  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)  
    Food allergy is an abnormal response to a food triggered by your body's immune system. In adults, the foods ... tree nuts, soy, and wheat. Symptoms of food allergy include Itching or swelling in your mouth Vomiting, ...
  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. Drug Reactions (National Library of Medicine)  
    ... the drug. Others can be more serious. Drug allergies are another type of reaction. They can be ...
  6. Allergies to House Dust Mites Interactive Tutorial (Patient Education Institute)  
    Dust Mite Allergy Introduction Of the many components in house dust to which people may be allergic, the most important is ... can significantly reduce exposure to house dust mites. Allergies The body’s immune system is equipped to fight ...
  7. Patch tests - allergy; Scratch tests - allergy; Skin tests - allergy; RAST test ... There are three common methods of allergy skin testing. The skin prick test involves: Placing a small amount of substances that may be causing your symptoms on the skin, ...
  8. Allergic reaction - drug (medication); Drug hypersensitivity; Medication hypersensitivity ... vomiting to life-threatening anaphylaxis . A true drug allergy is caused by a series of chemical steps ...
  9. Allergy Shots and Allergy Drops for Adults and Children (Agency for Healthcare Research and Quality)  
    ... and Children" /></a> Consumer Summary – Aug. 22, 2013 Allergy Shots and Allergy Drops for Adults and Children Formats View PDF ( ... this Web page . Understanding Your Condition What are allergies? An allergy is a reaction your body has ...
  10. Dayhist® Allergy ... Tavist® Allergy (formerly Tavist-1®) ... Clemastine is used to relieve hay fever and allergy symptoms, including sneezing; runny nose; and red, itchy, ...
previous · 1 · 2 · 3 · 4 · 5 · 6 · 7 · 8 · 9 · 10 · next