Symptoms can vary: Anaphylaxis is a systemic allergic reaction. That is, symptoms occur not just at the site of exposure, but at other parts of the body as well. Symptoms include widespread hives, flushing, vomiting, diarrhea, wheezing, swelling, and even a dangerous drop in blood pressure (shock). Anaphylaxis is an emergency, so seek immediate medical attention if you feel someone has these symptoms.
Answered 12/10/2012
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