How are anaphylactic allergy caused?

Anaphylactic allergies are caused by a severe and potentially life-threatening immune system response to an allergen. When a person with an allergy comes into contact with the allergen, their body produces antibodies called immunoglobulin E (IgE). These antibodies bind to cells in the body called mast cells and basophils, which then release histamine and other chemicals into the bloodstream.

These chemicals cause the symptoms of anaphylaxis, which can include:

* Difficulty breathing

* Wheezing

* Hives

* Swelling of the face, throat, or tongue

* Nausea

* Vomiting

* Diarrhea

* Dizziness

* Lightheadedness

* Loss of consciousness

Anaphylaxis can be triggered by a variety of allergens, including:

* Foods, such as peanuts, tree nuts, shellfish, milk, and eggs

* Insect stings, such as from bees, wasps, and hornets

* Certain medications, such as penicillin and aspirin

* Latex

* Pet dander

* Dust mites

Anaphylaxis is a medical emergency and can be fatal if not treated promptly. If you think you are experiencing anaphylaxis, call 911 immediately.