How To Get Rid Of The Patches On My Skin?

i was taking valparin chrono 300 for the past 13 years and now the medicine is stopped and i have advised by the doctor to take revotril 5 mg at night. now i am getting itches in some places like hand and face and after that i am getting like patch patch. when i went to a doctor he said that because of the medicine taken for a long period you got this and it is not curable and it is nothing but lucoderma. what i have to do now, is there any solution for this?