I have white patches on my hands and they seem to be multiplying. Went to one derm. and she took biospy, (result: no melanocites is skin), but she still didn't think it ws it. Went to another derm, he did woods lamp and nothing stood out, just looked normal. When six months later, took blood tests (result: fantastic health) and he did woods lamp again, and nothing. What the heck is on my hands? It's driving me insane.