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Anaphylaxis

The Basics | Symptoms | Detection & Treatment | Prevention

What Are the Symptoms?

Anaphylaxis may begin with severe itching of the eyes or face, followed by these symptoms, usually within minutes of exposure to the allergen:

  • Swelling of the throat, lips, and tongue.
  • Difficulty breathing, caused by swelling of the throat and constricting of the airways.
  • Difficulty swallowing.
  • Hives.
  • Generalized flushing (redness and warmth) of the skin.
  • Abdominal cramps and nausea.
  • Increased heart rate.
  • Sudden weakness.
  • Drop in blood pressure.
  • Vomiting or diarrhea.
  • Swelling throughout the body.
  • Shock.
  • Unconsciousness.
Medically reviewed by Paul Enright, MD, July 2005.

SOURCES: Joint Task Force on Practice Parameters. American Academy of Allergy, Asthma and Immunology. American College of Allergy, Asthma & Immunology. The Joint Council of Allergy, Asthma and Immunology. DEY.

The Basics | Symptoms | Detection & Treatment | Prevention
© 2005 WebMD Inc. All rights reserved.
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