Hives

Hives

Hives

Hives are an allergic reaction of the skin that may last a few minutes or can persist for a few days. They appear as raised, red, itchy bumps of different shapes and sizes, with defined red margins and pale centers.

Hives may appear and then disappear at random and seem to move from place to place on the skin.

Hives may appear as a reaction to a medication, food, or infection. A single area of swelling often occurs after an insect bite at the site of the bite. Other possible causes include skin contact with animal saliva, plants, or latex. Often a cause cannot be found.

Hives are often minor, but they can also be the first sign of a life-threatening allergic reaction (anaphylaxis) that requires emergency care.

How can you care for your child who has hives?

  • Many times children's hives are caused by something they can't avoid, like a virus or bacteria, or the cause may be unknown. However, if you think your child's hives were caused by a certain food or medicine, avoid it.
  • Keep your child away from strong soaps, detergents, and chemicals. These can make itching worse.
  • Put a cool, wet towel on the area to relieve itching.
  • Ask the doctor about giving your child a nondrowsy antihistamine, such as loratadine (Claritin), to help stop the hives and calm the itching. Be safe with medicines. Read and follow all instructions on the label.

Hives in children: When to call

Call 911 anytime you think your child may need emergency care. For example, call if:

  • Your child has symptoms of a severe allergic reaction. These may include:
    • Sudden raised, red areas (hives) all over their body.
    • Swelling of the throat, mouth, lips, or tongue.
    • Trouble breathing.
    • Passing out (losing consciousness). Or your child may feel very lightheaded or suddenly feel weak, confused, or restless.
    • Severe belly pain, nausea, vomiting, or diarrhea.

Call your doctor now or seek immediate medical care if:

  • Your child has symptoms of an allergic reaction, such as:
    • A rash or hives (raised, red areas on the skin).
    • Itching.
    • Swelling.
    • Mild belly pain or nausea.
  • Your child gets hives after starting a new medicine.
  • Hives have not gone away after 24 hours.

Watch closely for changes in your child's health, and be sure to contact your doctor if:

  • Your child does not get better as expected.

©2011-2025 Healthwise, Incorporated

The content above contains general health information provided by Healthwise, Incorporated, and reviewed by its medical experts. This content should not replace the advice of your healthcare provider. Not all treatments or services described are offered as services by us. For recommended treatments, please consult your healthcare provider.

Walk-in services

Find a walk-in clinic

Same-day primary care services

Learn more

Onsite diagnostic tests

Find same-day care

Hyperbaric oxygen therapy (HBOT)

Find a wound care doctor