When to seek medical help

Most of the time, hives will go away by themselves and need no treatment. You should contact your doctor if:

  • Your hives last longer than a few day.
  • They continue to recur for a month or longer.
  • You have symptoms of angioedema or anaphylaxis (a life-threatening allergic response).

Go to an emergency room immediately if any of the following symptoms accompany the development of your hives or angioedema:

  • Dizziness.
  • Wheezing.
  • Difficulty breathing.
  • Tightness in the chest.
  • Swelling of the tongue, lips, or face.

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