welcome to healthcare magic.
i will be glad to be of assistance
since it is a localized vitiligo
, the progression needs to be first stopped.
this can be done with the help of application of mometasone
furoate 0.1% cream once daily on the affected area, this should stop the progression and cause repigmentation of the lesions. it should be applied for 15 days and then a week can be taken off.
it can be continued in this manner till repigmentation occurs, but i strongly suggest that he should be under the care of a dermatologist
who can monitor his progress and look for side effects.
also you could discuss the effectiveness with tablet levamisole
which has to be administered twice a week, and then let the doctor start it for you
the other thing that you can try after the progression has stopped is narrowband uvb phototherapy
for it or excimer laser
. they give very good results.
also using tacrolimus ointment twice a day is very effective. you can try this also.
the treatment can take many months to show effect, its unpredictable as to how long.
also if you have vitiligo which is stable, even vitiligo surgeries can be considered and are quite effective.
please let me know if you have any queries.