Hi!
Just this past spring, in the middle of my worst winter's sick, I noticed these little red raised spots! Warts! that cropped up just in time for my rheumy to see them and agree..... WARTS! and that they didn't need any treatment unless they got bigger than I was....... so, then about 3 months later I noticed they were gone. From what I understand, they are viruses that crop up when my immune system lets them, and then it fights em off and they went away. I guess I had about 8 of them on my feet and lower legs, and 3 on my wrist, and had to stop myself from connecting the dots with a permanent marker! 
suetoo