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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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What causes black spots on upper arms?

Hi, so I have these black dots, I dont know when they apppeared but ive noticed them on both of my upper arms... Im naturally a very mole y person but these arn t the same There very smaller, like what a blocked pore may look like sort of size, but they are on the surface
Fri, 24 Jul 2015
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Dermatologist 's  Response
Hi...based on your presentation my diagnosis is Keratosis Pilaris. It is a keratinization disorder in which black spots appear over the follicular orifices (looking like black heads), mainly involves the outer aspects of both arms, thighs and buttocks. But the exact diagnosis is only possible if you post a pic of those lesions.
Treatment of the condition involves applying a keratolytic agent like retinoic acid 0.05% at night time along with some urea containing emollient at morning time. this treatment you have to take at least for two months before you will any improvement as keratolysis is a slow process.
Hope this post is useful for you..
Thanks
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