Blisters - Friction

Definition

• Raised pocket of clear fluid, covered by skin
• Friction blisters usually occur on the palms, fingers, heels or toes

Call or Return If

• Blister looks infected
• Severe pain and you want your doctor to drain the blister
• You think your child needs to be seen
• Your child becomes worse

About This Topic

Symptoms

• Blisters cause mild to moderate pain.
• The amount of pain depends on where and how large they are.
• They can interfere with work or sports.

Cause

• A friction blister is the result of forces on the skin. Shear forces separate the top layer of the skin from the lower layer. This forms a cushion (blister) of fluid over the spot of friction or pressure.
• Hand blisters are often due to friction from using a tool too much. Examples are a shovel, pick, or rake. They can also be caused by sports equipment. Examples are a tennis racquet or boat oars. Gymnastics equipment (such as high bars) may also cause hand blisters.
• Foot blisters are likely due to friction from an activity. Examples are hiking or running. Often, a child has new shoes or poorly-fitting shoes. Children starting a new sport may develop blisters. Also, a risk factor to forming blisters is recently increasing the activity time.

Prevention of Foot Blisters

• Shoes. Buy shoes that fit. Do not wear shoes that are too tight or too loose. New hiking boots are often somewhat stiff. It is wise to first wear them around the house and on short walks.
• Socks. Do not use cotton socks. They tend to stay damp when wearing. Instead use synthetic (acrylic) or wool socks. Some people prefer to wear two socks at a time. You can wear a thin inner liner ('wicking') sock and a thicker outer sock.
• Lubricants. If your child often gets blisters at the same spot, use a lubricant. You can use petroleum jelly. Cover the area with a small amount of the lubricant before sports. This will help to reduce friction on the spot.
• Taping Pressure Points. If a lubricant doesn't stop blisters, taping is the next step. Taping is a very good way to treat hot spots for friction blisters. Many hikers and runners use taping. Use moleskin or duct tape. Cut a piece to a shape slightly larger than the pressure point. Put it on the pressure point. Smooth it from the center outward so that there are no wrinkles.

Prevention of Hand Blisters

• Gloves. Wear heavy-duty work gloves when working with the hands. Also, use gloves when working with tools. Examples are shovels, and rakes. Sports gloves can be used for rowing, paddling, weight lifting or cycling.
• Lubricants. Lower friction at pressure points by covering them with a lubricant. You can use petroleum jelly.

After Care Advice