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I have a half circle spot on my arm that is red at times and other times looks black and it itches from time to time.What could

Posted by laguerita

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I have to be truthful but I'm not all that good w/rashes & skin conditions, much less when they're being described - you know that saying about how much a picture is worth.  The best advice I can offer you is to go see your family physician or a dermatologist and get evaluated.  You don't mention how often/quickly your spot changes color but I'm always worried about melanoma.  I suppose some sort of vascular lesion could change color more quickly depending upon blood flow.  Sorry I couldn't be of more assistance.  Good luck!
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