I have small, irregular white spots on my lower legs, mostly outer calves but also knees & upper thighs. They stand out the most when I am standing or sitting in a chair. They disappear when I have my legs up in the air, when lying down. When I massage them while standing, they disappear for about 10-20 seconds and gradually reappear. Also beginning to see faint ones on upper arms. Could this be tinea versicolor? Some of the pictures & symptoms resemble what I have. I haven't had a lot of sun exposure in past, am generally pretty white but these spots still stand out. Or does it sound more like a circulatory problem? I am 26, a smoker (working on quitting), not the best immune system or circulation. Any insights would be helpful as I try to narrow down and find a treatment.