Hi, I've had this left underarm rash on and off for maybe a year or year and a half. It was never really too bad before. One day my left armpit just got really itchy and some red bumpy patches appeared. Rubbed some Lotrimin and Hydrocortisone on it and it would go away for a while. Not really sure which cream did the work. Weeks later, my arm would get itchy again and some of the rash came back. Haven't had it since about late January/early February until recently. Scratched my arm a little, and BAM it came back. Sometimes the urge to itch is very strong but I'm pretty good about not touching it, but clothes and friction kind itch it on their own.
I don't have any more Lotrimin, and I'm not using Hydrocortisone right now because I'm trying Blue Star Ointment to see if that works. Its only been about 2 days, so I feel like its too early too tell. However, it still looks mostly the same. Not really sure if this matters, but I'm an avid gym-goer and go about 4 times a week, and I do shower after I finish. I am also taking protein/weight gainer, and I don't really eat fast food or anything too greasy often. I'm also HIV negative, most recently confirmed 2/22/13. Not sure if any of my activities have to do with this rash issue.
However, I have had a history with ringworm on my right underarm for about 2 or 3 years. Its been on and off, and I recently went to the dermatologist about it, but the rash from the left arm disappeared before I could even show it to the doctor. The ringworm and the left arm rash look nothing alike, so I don't know if the two are related at all.
Any help identifying this rash and how to treat it would be greatly appreciated!