Folliculitis happens when your hair follicles become inflamed, causing bumps. It's most common on the legs, butt, arms, back, and beard areas. You can treat folliculitis by changing the way you ...

Superficial folliculitis is an inflammation of the upper section of the hair follicle, and may be caused by an injury to the follicle, by infection, or by a chemical irritation of the follicle.