I have a light brown ring on my right arm, on the inside. I don't remember being bitten there, but a few insects have been in the house, so I suppose it could've happened in my sleep. I don't believe that it's a tick bite, since it doesn't really have a bullseye marking or match any pictures I've seen. It doesn't hurt or really feel anything, but it's been around for a couple of days now, and the skin in the middle of it feels dry, and it peels a bit near the ring area. When I was in the shower earlier, though, it seemed to go from a ring to a patch, though I can't be certain.
Here are a couple of pictures of it. Apologies for the bad quality.
Is it possible it's just a bruise or something, or does anybody else have any idea what it could be?