I've gotten this before and it eventually went away. I can see it starting now....it's very faint but it's a red rash on the inside of the crook of my elbow. It gets dry and more pronounced. I think it has something to do with heat on the inside of my arms when I bend them because the edges meet when I bend my arm.
Sorry, it's hard to explain...just wondering if this is excema or something like it.