A member asked:

What would cause skin above knees to be bluish there was no injury.

A doctor has provided 1 answer

Bruising: Usually, discoloration like this is due from bruising from injury. The injury doesn't have to be that painful and it could've happened 1-2 days before the bruising appeared. Squatting, strenuous exercise or hamstring strain could possibly do this. If it's happening on the front of both legs, i wouldn't worry about serious things like blood clots. But if persists, have your doc take a look!

Answered 2/20/2013

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