White patches on my skin. Please answer.

I was diagnosed with white patches since last 3 years. I have consulted doctors and in the first two month, almost 70% of my white patches reduced. After that it stop reducing. I changed medicine few times as prescribed by doctors but it is still same. Band during last three year I didn't get new white patches.. But I stopped my medicine two months ago by thinking I m fine and also the white patches are not so visible. Now what happened, I have a very sensitive skin and from last few months my face especially around and ear, nose, eyelid and my forehead, I felt itching all the times and it look like rashes sometimes. So I applied "Betamil GM" on those rashes and it cool down for few days. Then again after some time the itching starts and I applied the same medicine. Now the itching area had turned white. I wanted to know whether it is due to that itching med or my vitiligo. Please answer.