Sometime last year I noticed that there is a small white spot on my left cheek. It was not very big in size, but if someone will look at me closely, he/she can clearly see it. I was assuming that it will go off on how own, but it has been there for around a year now. Its size is still the same. It's not spreading or anything like that, but now I'm concerned that it can. Is this a known medical condition, and can it be cured? Or, is it a good idea to wait more and see how it goes?