My 14 year old sun was swimming in the creek on July 4th and we noticed a dime size brown spot on his forehead.  It does not hurt or itch, its just very different from what I have ever seen on his face. He has a little acne and little pale skin. We were not out very long and it was an overcast.  What should do? Thanks
Hi, Thank you for asking question on Chat Doctor. If he had any minor injury which has gone unnoticed may give rise to such brown mark. Usually it passes away within a week. If not you see a dermatologist. Hope this answer will serve your purposeless feel free to ask any more queries if requiredTake care Chat Doctor. V. Subrahmanyam MD;Disassociate professor of pediatrics