And pictures of rashes in medical textbooks often feature white models. To make the situation even more complicated, different skin conditions look different on light skin compared to darker skin colors. Sometimes a minor bump could just be a simple pimple, but you may not know what you’re dealing with when the irritation is bigger, redder, and even painful. ICYMI, a butt rash can happen to adults too, not just babies. Rashes are itchy and annoying, but they bring on a whole new level of discomfort when they appear on your butt.
