Iraq War Neck Rash

Its been over a year and a half since this strange rash started on the back of my neck.  It is localized to the neck area only- At first it became red and extremely painful with whiteheads located throughout, but within a few weeks, it seems to recede. I have seen two doctors for it and been given different types of topical medications, but it has this strange habit of returning and flaring up when I get stressed or I become very sweaty.  It is almost non- exsistent at this point, but you can tell its there if you are looking for it.  Eventually, it will flare again and I hope to avoid that.  Has anyone heard of anyone with a story like this one??