Hi..thanks for your query
You need to keep a few important things in mind while treating Vitiligo
First,this is a very persistent condition .For localized vitiligo , a topical steroid
is the first line of management and here you are on the right way.Only , this take months for some people to repigment.
Since using steroids
on skin for long is not recommended due to its local side-effects , it is advisable to start on a second agent like Tacrolimus/Pimecrolimus
Secondly , you should observe the patch carefully to find out if it is enlarging.Photographs help a lot.You can take measurements too.In case it is spreading ,there may be requirement of oral steroids.
Once the patch is stable, you can go in for surgical methods to cause re pigmentation in the area .
Hope this is helpful.