Tiny blood vessels, pimples, and pustules sometimes, but not always, crop up in the red areas of the face. As such, rosacea is commonly mistaken for acne. However, with rosacea, no blackheads appear.

Butt acne is often not caused by acne at all but by various conditions such as folliculitis, keratosis pilaris, or boils. It is possible to have acne in the area around your buttocks, but it isn't as ...