I have had what I think is an intertrigo rash for over a year in my left elbow crease. It is rarely itchy or prominent but sometimes it has episodes where it is. Occassionally it comes up on my right arm to a lesser extent, but goes away. I am 22 and overweight. About 4 weeks ago this rash came up on my right arm and when itching I noticed a small lump on the inside of my elbow crease under my skin. At the time I thought my skin was irritated because I might be allergic to my new moisturizer so I stopped using it. Now underneath the skin there is a huge swollen patch that extends from the very edge of the inside of my elbow crease to the middle. It only hurts if I have been prodding it a lot, otherwise it is easy to forget that it s there. The rash is still there but is less prominent and no longer itchy. I am worried that the bump, which feels rubbery, is a node. Does this sound like something I should be worried about? The swelling hasn t subsided with ice or ibuprofen.