and sorry, as far as I'm aware there is no cure so there is little a dermatologist will help you with. Sun exposure works best for him. It is not related to hygiene and, of course it is not contagious. Also, he swears that to eat lots of carrots help him.

YOu might find that skin diseases run in families. I do suffer from bouts of pitiriasis alba every two years or so, which can be easily treated and does not cause much discomfort, but it's a pain. My grandparents both suffered from skin cancer.