When should I go to the emergency room for an allergic reaction?

A Answers (2)

  • Allergic reactions should be taken seriously. We recommend being seen by a doctor for any allergic reactions that concern you. Symptoms that should prompt an immediate emergency room visit include any difficulty breathing, swelling of the throat or mouth, difficulty swallowing and lightheadedness. Other significant reactions include rash, diarrhea, abdominal pain and itching.
  • If you have an allergic reaction, call 911 or go to the hospital emergency room for:
    • Swelling of the face or throat
    • Trouble swallowing
    • Trouble breathing
    • Being dizzy or passing out
    • Coughing and vomiting
    These are signs of a dangerous allergic reaction. Get medical help right away!

    Call or go to the doctor or clinic if:
    • Your whole body has reacted strongly to a bite or sting (bee, wasp, hornet, fire ant, and so on)
    • Your body has had a bad reaction to food or medicine
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What is an allergic reaction to a bite or sting?