What are the signs and symptoms of anaphylaxis?

Signs and symptoms of anaphylaxis are signs and symptoms from various body systems, as the entire body is affected. They include:

  • Wheezing and difficulty in breathing, caused by narrowing of the airways (bronchospasm). Difficulty in breathing may also be caused by fluid in the lungs (pulmonary oedema).
  • Stridor, a loud, harsh, rasping sound heard because of an obstruction in the upper airways. This may be caused by swelling (angioedema) of a part of the throat known as the larynx.
  • Facial swelling (angioedema). When you press the swelling, it should not leave a mark and should spring back to its original shape.
  • An itchy rash on the skin or hives (urticaria). An itching sensation may also be felt on palms, soles of the feet, and around the genitalia.
  • Flushing or sweating, or the affected person may become pale
  • A very fast heart rate and low blood pressure. This indicates that blood vessels throughout the body have become wider (vasodilation). Because the blood vessels are wider, each beat of the heart pushes blood a shorter distance along the blood vessels. The heart rate increases as it tries to pump blood around the body. The heart rhythms may also be irregular
  • Nausea, vomiting, abdominal pain, or diarrhoea.

Anaphylaxis Guide Index:

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