hello my name is rukmini and i am 23 ,i have a skin problem and taking treatment from 6 months but no result of treatment even doctors are not able to detect the type of skin problem . have black marks on my body in round shape and black color nearly 2-3 inch bigger in size ,13 marks i have in full body including legs, hips, back,chest,hands i can send images if u give any options sir thanks you