I am wondering if there are any cases or knowledge of an std causing dermatitis. I know that gonorrhea has dermatitis as a symptom but the logistics don’t match. I realize that a lot of people have some form of dermatitis and it is most likely not related to an std but I have always suspected a cause of mine. Here is a quick background:

when I was 17 years old I had unprotected sex with my girlfriend. After a while into our relationship she told me her x had something. Some sort of rash that showed up on his arms and would come and go over time. Umm… that was something I did not want to hear! Anyway my time details are a little sketchy but about 6months to 9months later I had developed an odd rash on the inside of my left arm where the elbow is. This rash would get bright red and shiny and covered an area about 1 inch square. Soon the rash showed up on my right arm in the same spot making this annoyance symmetrical. After getting completely over seeing this I went to a dermatologist and they hooked me up with some kind of hormone cream that helped but it kept coming back no matter what. Soon this redness showed up on my face. My chin, inner cheeks, and between the eyes were always bright red. After a while this rash covered my abdominal area and man it sucked. So now I have a red face, red inner arms and red stomach. For a while the skin connecting the nostrils in my nose would actually split. It would get red and painful then the skin at the tip of the nose would just open like someone cut my nose to make the nostril bigger. This would heal with the creams but would always come back. A couple more visits to a dermatologist and a few more super cortisone creams later I finally had some blood tests done to see if I had any of the common stds. I was tested for hiv, syphilis and some other stds they check for as a standard. All tests came back negative but that was a few years ago.
I am now 33 years old and still plagued with this crap and I can’t seem to accept the fact that something like this just pops up with no cause. The fact that this type of dermatitis does not seem to run in my family on either side and my sex partner told me her x had something has lead me to believe I caught something and don’t know what.
If and std could trigger or cause something like this would it be too late to treat now that so much time has past?