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:
- Difficulty breathing.
- Tightness in the chest.
- Swelling of the tongue, lips, or face.