Rashes on the buttocks can happen because of allergies, moisture, friction, infections, or skin conditions. Most rashes ...

Causes of a butt rash include your skin coming into contact with something irritating, infection, or having an allergic reaction. You may experience irritated, swollen skin that can be itchy ...

an itchy rash characterized by small blisters on the knees, elbows, lower back, or buttocks. For people with celiac, dermatitis herpetiformis typically occurs within a month of consuming gluten ...