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A blister is a small pocket of fluid that forms in the upper layers of the skin.
Causes of blisters
Blisters are often the result of an injury to the skin from friction, such as shoes that rub.
Treating blisters
Find out how to treat blisters. Most blisters heal naturally and do not require medical attention.
Preventing blisters
There are several ways to prevent getting blisters from friction, sunburn or chemicals.
Diagnosing blisters
Blisters from friction or heat usually have an obvious cause, such as sunburn, shoes that rub or heavy manual work.