I have been getting purpleish rashes that seem to be underneath the skin as well as patches of little red bumps on my thighs for about a 2 weeks. My thighs, genital, butt, and nipples are also very itchy and after scratching for awhile I develop larger red bumps, these are only appearing where I scratch the most.
I don't know if it's anything sexual, but I've been having sex with the same person for two years or so, I was told he was checked for STIs after his most recent girlfriend, and as far as I know has only had sex with me since then. Problem is he is itchy too, not so much the rashes and bumps.
At first I thought it was fleas, we sleep in the same bed with a cat who could possibly have them but now I don't really know.
Any ideas on what it could be/what I should do about it?