A bump on the skin that's filled with blood.
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.
A blood blister looks like a blood-filled bubble covered by skin.
A blister usually heals on its own. One that doesn't heal or becomes infected needs medical attention.
Last Updated Nov 7, 2023