Hives (urticaria)

PDF download is not available for Arabic and Urdu languages at this time. Please use the browser print function instead

An overview of the causes, symptoms and treatment of hives — the raised, itchy, red swellings that can appear on the skin.

Key points

  • Hives are raised, itchy, red swellings of different sizes that appear on the skin and can move around the skin.
  • Seek medical assistance right away if you suspect the hives are a symptom of anaphylaxis.
  • Infections, such as viruses, or allergic reactions to medications, food or other allergens often cause hives.
  • An oral non-sedating (non-drowsy) antihistamine can usually ease the itch and the rash until the hives go away.
Last updated: M11 20th 2024