Lesson 3

Symptoms of Anaphylaxis

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Throat swelling

The symptoms of anaphylaxis appear within minutes to several hours after exposure to the allergen and involve the skin, lungs, and GI (digestive) tract. Anaphylaxis is likely occurring if at least 2 of these conditions are present:

  • Hives, itchiness, or redness all over the body and swelling of the lips, tongue, or back of the throat
  • Trouble breathing in the upper and/or lower part of the airways
  • Drop in blood pressure indicated by a weak pulse, confusion, dizziness, or loss of consciousness
  • Long-lasting GI symptoms such as cramps or vomiting

One of the serious symptoms associated with anaphylaxis is swelling of the throat which can lead to trouble breathing. Not as obvious but equally serious is low blood pressure which results from the dilation (or widening) of blood vessels.

Continue to learn more about diagnosing anaphylaxis.