Also known as furuncles, boils are pockets of pus (a creamy, white substance) on the skin caused by bacteria infecting hair follicles. Cysts—noncancerous sacs of fluid, air, pus, or a soft ...

When it comes to skin abscesses, a few common types are: boils, which are painful bumps or nodules furuncles, which are usually due to an infected hair follicle, are filled with pus, and can ...

A pimple on your butt could be a boil, which is a hair follicle infection. It could also be keratosis: a skin condition where dead skin cells build up in your hair follicles. Acne on your butt is ...