Home Contact Us Site Map
Search for:
Classes & Programs WebNursery
Health Info Find a Job Find a Physician
About St. John's Mercy
St. John's Mercy Medical Center - St. Louis
St. John's Mercy Hospital
Services and Specialties
Information for Patients
For Health Professionals
St. John's Mercy Medical Group
St. John's Mercy Health Services
St. John's Mercy Quality
Foundation
E-mail a Patient
Privacy Statement
 
Home > Health Information > Children's Health > Health and Well-being  Printer Friendly Page Printable Version

Blisters

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/scalds
  • sunburns
  • friction (from a shoe, for example)
  • contact dermatitis
  • impetigo (a contagious infection of the skin)
  • viral infections (including chickenpox and herpes zoster)

The symptoms of a blister may resemble other skin conditions or medical problems. Always consult your child's physician 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 such as increased warmth, swelling, redness, drainage, pus formation, or pain. If you notice any signs of infection, call your child's physician. Antibiotics may be needed.

Click here to view the
Online Resources page of this Web.

Find A Doctor
Pediatrics - General

Departments and Services
Children's Services

Topic Content
Site Index

Accident Statistics

Minor Problem vs. a True Emergency

Preventing Injuries - How You Can Help Your Child

First-Aid Kit

Household Safety Checklist

Emergency Contact Information

Bites and Stings

Minor Cuts, Scrapes, and Skin Wounds

Superficial Injuries to the Face and Head

Eye Trauma

Muscle and Joint Injuries

Thermal Injuries

Poisons

Glossary

Online Resources

A member of the
Sisters of Mercy Health System