A few years ago I noticed there was a yellow/light brown spot the size if a dime on my chest in an area never exposed to sun. I didn't think it was a big deal, but over the last year it has increased to about the size of a quarter and there are several more smaller spots in the same general area, also a few on my back, and a few in my groin area. The spots do not itch, don't cause any discomfort, and don't flake skin. They cause me no trouble whatsoever but the increase in number and size has me worried about what could be causing them.