Vitiligo or psoriasis with white patches

I am not sure if I have vitiligo or psoriasis. I used to live in Pathankot (Punjab) and consulted many doctors there. They told me that my white patches are signs of vitiligo and prescribed me some medicines. I am 20 now and moved to the United States when I was 17. I consulted many doctors here and they told me that these are the signs of psoriasis. I have no family history of either. I have got white patches on my thighs, around my eyes and lip corners. The intensity of these patches is not very high but they are very visible. Even if I get hurt(peel skin off), my original skin color doesn't come back. I watched your videos on youtube and that gave me a hope to recover. I would really appreciate if you could help me with this problem.