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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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What Causes Red Spot On Arm That Darkens In Heat?

I have a red spot on my upper arm around the muscle area. I have had it for over a year now, it does not itch or cause me pain. When I am outside in the heat it gets a deeper red, then lightens up a bit once I cool down. Should I be concerened about this?
Thu, 10 Jul 2014
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What Causes Red Spot On Arm That Darkens In Heat?