Anaphylaxis

Also called: Anaphylactic shock.

What is Anaphylaxis?

Anaphylaxis is a serious allergic reaction. It can begin very quickly, and symptoms may be life-threatening. The most common causes are reactions to foods (especially peanuts), medications, and stinging insects. Other causes include exercise and exposure to latex. Sometimes no cause can be found. It can affect many organs: Skin - itching, hives, redness, swelling Nose - sneezing, stuffy nose, runny nose Mouth - itching, swelling of the lips or tongue Throat - itching, tightness, trouble swallowing, swelling of the back of the throat Chest - shortness of breath, coughing, wheezing, chest pain or tightness Heart - weak pulse, passing out, shock Gastrointestinal tract - vomiting, diarrhea, cramps Nervous system - dizziness or fainting If someone is having a serious allergic reaction, call 911. If an auto-injector is available, give the person the injection right away.

Source: MedlinePlus, U.S. National Library of Medicine (NIH) — read the full NIH article.

Educational summary of an authoritative source — not medical advice. Please see your doctor for diagnosis, and seek urgent care for any severe or sudden symptoms.