DEAR DR. GOTT: I am a 13-year-old girl. I have excessive arm hair, mostly between my elbows and wrist. Is there some reason for it?
DEAR READER: Unless you have other health concerns, the most likely reason is genetic. If your mother, grandmother and/or other close female relatives also have excess forearm hair, you can blame them. Some ethnic backgrounds may be more prone to developing heavier amounts of arm, body or facial hair.
I suggest you speak with your physician regarding your concerns. Perhaps an examination and blood work may be in order if you are experiencing other symptoms you did not mention in your brief note.