(Cue the sigh of relief.) Potential causes for a rash on your butt include autoimmune conditions, allergic reactions, and infections, says Dustin Portela, DO, a board-certified dermatologist at Treasure Valley Dermatology and Skin Cancer Center in Boise, Idaho.
Turns out, butt rashes could be related to a number of issues-most of which are no biggie and easily treatable. A rash is uncomfortable at best, and even more so if it’s in your nether regions, such as a butt rash. Let's be real: Any kind of skin irritation is not fun.