FOR ABOUT A YEAR OR TWO NOW I HAVE HAD A ON GROWING RASH THAT JUST STARTED AROUND THE BACK OF MY NECK AND WAS REALLY ITCHY AT TIMES AND AT OTHER TIMES NOT ITCHY AT ALL...IT IS NOW COMPLETLEY AROUND MY NECK. IT IS RED AND BLOTCHY MORE LIKE DOTS THE AREA IS NOT RAISED, BUT IS VERY NOTICABLE...IT IS ALSO UNDERNEATH MY BREAST....THESE ARE TWO AREAS THAT DO SWEAT AL LITTLE AND FOR THE LONGEST TIME I THOUGHT IT WAS BECAUSE OF MY WEIGHT GAIN OVER 117 LBS. IN THE LAST 2 YEARS BUT IT IS NOW WORSE THAN EVER AND IT IS VERY NOTICABLE AND EMBARRASSING AND ITCHES ALOT...WHAT IS THIS???