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A member asked:
Hi i have a red blue spot under my knee on the right leg, it doesn't hurt but i have a blue spot on the left leg that hurts, what could they be?
A doctor has provided 1 answer
Several things!: But the diagnosis of erythema nodosum must be excluded, since it has systemic causes! it is an autoimmune condition.
Answered 1/19/2014
4.6k views
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