I have a skin rash. It starts on my neck and spreads down over my chest back and shoulders. It starts out itchy and ends up sore. I went to a dermitologist and he said I was having a reaction to a steroids shot. That it was working its way out of my body and infecting the hair follicles. But I noticed that this rash goes away when I start my period each month and then comes back a week or so after i my cycle is finished. The breakouts on my neck ate itchy and embarrassing. What is wrong with me????