Skin bumps: At your age skin cancers are very rare. But several benign things like cysts, adnexal tumors and such are fairly common. Waxing and waning may suggest a cyst or some type of urticaria like reaction. If it becomes persistent then you should have it checked out.
Answered 11/19/2017
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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