I have some sort of skin condition (about 10 years now) basically any part of my body that isn't exposed to sun gets patches of dry red skin all over it. These patches do not itch and seem to be much more concentrated in places that aren't exposed to sun (for example, my arms are always exposed to sun, so they're normal, my belly is rarely exposed, so it just has a few small spots, and my thighs are NEVER exposed and they are completely covered.