i have the same exact thing. Its bazaar. I'm in a constant state of bafflement about them. I thought it was an allergic reaction to alcohol but I'm realizing it's probably a reaction to the sun...I live in NYC...there is so much potential gross things around its just ironic that this weird thing is from sun exposure. It's gross though...I'm becoming insecure about it...shaking peoples hands and what not. Anyone know if it is contagious?