Suggest Remedies For A Itchy Rash On My Vagina Spreading By Touch

pimple/hive like itchy rash on vagina spreading to ears nose and skin...i went to the doctors several times and they are bafled saying i might have to see a demotologist. please help!!! it itches extremely bad and starts in the pelvic region and starts spreading to thighs ears nose and face. It seems to spread wherever i touch.