Hi , i have a red itchy rash , on my thighs,parts of my knees, buttocks and,a little on my stomach, it is very red, with little darker red spots in the rash itself......I have been putting betnovate cream on which seems to help a bit, but as soon as i stop putting the cream on the rash returns, i try not to scratch , but seem to sctatch in my sleep, can you help please?