Hi , I woke up yeaterday, with large lumps across my shoulder ad a few spotted about on my back and two on my knee , like a rash but they are large and individual , there have slowly started to become more , just a few, they look almost puss filled and situate Ustinov under the skin, although , no puss is present, when attempted to pop, the lumps stayed hole and only blood came out , hen slightly scabbed green, I have been to the doctors and have been prescribed steroid cream, the doctor said he can not deturman the cause and is very unusual , he said they look like large bug bites although I have not been near any and have a nw bed , my partner is unaffected ? Any suggestions ?