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Blisters in Children

What is a blister?

A blister is a bump on the skin containing fluid. Blisters are usually circular in shape. The fluid that forms underneath the skin can be bloody or clear.

What causes a blister?

Blisters are caused by injury, allergic reactions, or infections, which may include the following:

  • Burns and scalds

  • Sunburns

  • Friction (such as from a shoe)

  • Contact dermatitis

  • Impetigo (a contagious infection of the skin)

  • Viral infections (including chickenpox and herpes zoster)

  • Fungus

  • Thumb-sucking

  • Drugs reactions

The symptoms of a blister may resemble other skin conditions or medical problems. Always talk with your child's health care provider for a diagnosis.

First-aid for blisters

Blisters often heal spontaneously. Treatment will vary according to the cause. Some general guidelines for treatment may include:

  • Wash the area with soap and water.

  • A cold or ice pack may help reduce swelling and discomfort.

  • Keep the area clean and dry. Do not burst or puncture the blister.

  • If the blister bursts, place an adhesive bandage or dressing on the area to keep it clean.

  • Observe the area for signs of infection, like increased warmth, swelling, redness, drainage, pus formation, or pain. If you notice any signs of infection, call your child's health care provider. Antibiotics may be needed.

Online Medical Reviewer: Bass, Pat F. III, MD, MPH
Online Medical Reviewer: Berman, Kevin, MD, PhD
Last Review Date: 5/17/2015
© 2000-2015 The StayWell Company, LLC. 780 Township Line Road, Yardley, PA 19067. All rights reserved. This information is not intended as a substitute for professional medical care. Always follow your healthcare professional's instructions.

404 - Page not Found.

The page you are looking for may have moved or no longer exists. Please use our feedback form to report this page as missing.

To find the correct web page, please try to access our most popular pages using the links below, or search by keyword.

Popular Pages 

Contact Us

For general inquiries, please call the main number at 202-476-5000.

Thank you for visiting and sorry again for the inconvenience.

Children's National in Your Neighborhood

A location marker

Did you know Children’s National has more than 50 locations throughout the region? Find one that’s convenient for your family.

Find a Children's Location Near You