Sunday, January 8, 2012

Blood Blisters

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 bodily fluids trapped beneath the skin. Usually caused by accidents in which the skin is pinched by a tool or mechanism. 

1 comment:

  1. Ahhh... those ones in the mouth make me cringe a bit.