I've noticed 4-5 purplish spots on my rear end. They do not itch and they go away temporarily when I press down on them but then return back within seconds. I noticed one a while ago but now there are four more or so. The first one I had I scratched and it began to bleed a little bit. I wasn't sure if this was anything serious and was worried it could be from Syphilis or something. Any information on what these could or could not be would be extremely helpful!