I have very very light spot on my cheek which is increasing. I consulted a doctor last year and she told me that it is pityriasis vercicolor. Suggested to apply lulifin and zinc tablet. Thought it is not dry, my cheek area as you can see in the pic attached is a bit white. I have tried everything but it's not helping. I wanted to know if this skin condition is dangerous like vitiligo. Please tell me if I should be worried about it I am too worried about it I have tried everything but it's not helping.