How To Treat Persistent Vitiligo?

Hello doctor`s i am affected for vitiligo,from 1998 at the age of 20,started with my thumb finger,at the time i am consult doctor and taken the English tablets of Eldem, and melorom till 2002,but it is not satisfied then i am consult other doctor at chennai Dr,Karthikeyan he is also the English medicine, he would be given the course of treatement and given tablets i am not able to remember,but not satisfied is it not reduced but star spreading ,then i move to homo medicine, for 8 month it is also not reduced still increase , then move to siddha medicine from anna hospital at annanagar for one year,it respond slowly but result is increase,now it is spread with all the fingers and palms and foot palms also and face surrounding the mouth,then i move to PUVA it give good result reduce the patches from face for first 3 months but not respond in fingers,still i am continue with PUVA for last 1year 6 months but now it is not respond start increasing with my face and fingers also, i am requesting you please help me any one guide me what i need to do in the next step to stop spreading ,i consult doctor he told me there is no option this is the only way need to continue the same treatment. please help me any one to find the write treatment for this stage. Thanks Ravikumar Chennai.