Rashes That Look Like Dirt Rash On Abdominal That Doesnt Hurt Or Itch?

Rash on abdominal that doesnt hurt or itch? - rashes that look like dirt

looks like a red rash, I think. no pain, itching, and not distorted. have been spread that since 2007, but it seems now. If I shower and dirt away with a towel and dry the area is pink. It seems that the dirt, where not, but it come from? I also have abdominal pain.