I never found out what caused the hair loss. But it was everywhere for a while. I had to clean my hairbrush every other day.

I started Centrum Silver and biotin and nioxin hair treatment and Nioxin shampoo.

I know hair loss just happens with age, but 2 different hair dressers noticed it and asked me about it.

Anyway, after a few months it stopped. So I don't know what caused it or stopped it.