What Causes White Patch In The Vaginal Area?

Hi, I'm 21 years old, my height is 5'1 and I weigh about 113 lbs. I don't have medical history that I know of, but I notice around my vaginal area a year ago, that I have small white patch around the lip with white hair growing their also. I think it might be Vitiligo, but it's not severe in any way. I don't know what to do?