A blister is a bubble of fluid under the outer layer of skin. The fluid may be clear or filled with blood or pus. There are many possible causes of blisters including a burn, disease, an allergic reaction, or from your skin rubbing against something. Blisters caused by your skin rubbing against something are called friction blisters and most commonly occur on feet or hands.

 

How do I treat blisters?

Try to minimize rubbing against your skin using the following guidelines.