hello doctor , my friend age 27,has a white patch in his front shaft of the penis,and some patch here and there in the penis. this patch is known as (seti) in bengali. he has this patch in some other parts of his body, but now thouse are cured.but the patch in the penis is not going.he is going to marry within few months and he is worried about that white patch.he is very shy to tell anyone about that and mentally depressed. please suggest some medicine if possible. thank you.