Hi. If PCOS is also diagnosed then one may get severe hair fall. Hence consulting the gynaec may also help if there is evidence of irregular periods, for which treatment may be commenced. Get your serum ferritin and thyroid profile done as well. As your vitamin D is low it should be taken at least in sachet form once a week. Other detailed history needs to be elicited by a dermatologist. Regards, Dr. Zubin Mandlewala