Blood blister

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A bump on the skin that’s filled with blood.

Description

A blood blister can occur when the skin is rubbed, bruised or pinched. The unbroken skin that covers the blister may provide a natural barrier to bacteria and decrease the risk of infection.

Overview

A blood blister looks like a blood-filled bubble covered by skin.

Symptoms

A blister usually heals on its own. One that doesn’t heal or becomes infected needs medical attention.

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