The Incredible Rotating Rash

I've developed an incredible rotating rash. I have no idea what my problem is. I just got over my sprained foot and am walking upright like a homo erectus once again. Now I have this weird rash on both of my wrists and shoulders. Sometimes it's there and sometimes it's not. Sometimes it's on one wrist and sometimes it's on both. I don't know if I'm allergic to something or if it's heat related. It doesn't itch, I'm just slowly falling apart.