Red bumps on my butt. People who have problems with bladder and bowel control often develop butt rashes. Stay away from tight-fitting bottoms. Sensitive skin isn't a disease that a doctor can diagnose you with - it's usually a symptom of another condition. This mild steroid cream is suitable for many types of rash. Skin Boils Causes, Symptoms, and Treatment. But are those, uh, butt pimples? They can also lead to:. Like side-boob tattoos or finger tattoos, part of the appeal of an ankle tattoo is that it's cute and coy.