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A member asked:
What are the causes of a blood blister?
A doctor has provided 1 answer
Pinch: A blood blister is a type of blister that forms when subdermal tissues and blood vessels are damaged without piercing the skin. It consists of a pool of lymph, blood and other body fluids trapped beneath the skin. If punctured, it suppurates a dark fluid.
Answered 11/6/2017
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