Folliculitis is inflammation or infection that can affect one or more hair follicles. Your hair follicles are the small cavities that surround the roots of your hair.

Folliculitis is relatively common and can occur on your skin wherever hair grows, including your scalp. It’s most likely to occur on your thighs, buttocks, neck, and armpits — places where friction is common. It usually appears as small bumps that may look like acne or a rash. It can be isolated to one hair follicle or affect many. It can be acute or chronic. Acute cases occur for a short time, while chronic cases are long lasting.

Folliculitis happens frequently in people with Hidradenitis Suppurativa, both in areas where one is prone to develop HS and in other areas.  It is unknown if there is a common cause.

Learn more about folliculitis on WebMD.

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