Acne Inversa

A chronic skin condition featuring lumps in places such as the armpits or groin. The skin lesions develop because of inflammation and infection of sweat glands. This condition features pea- to marble-sized lumps under the skin that can be painful and tend to enlarge and drain pus. They usually occur where skin rubs together, such as in the armpits, groin, and buttocks.

Frequently Asked Questions

The skin bumps seen with hidradenitis suppurativa occur when hair follicles and/or sweat glands become clogged and inflamed due to abnormal overgrowth of cells. This overgrowth is thought to be secondary to hormones and/or nicotine.

It is also not contagious. It is an ongoing health problem that flares up, goes away for a while, and then comes back. In women, symptoms may get worse before a menstrual period and then go away after. Over time, you may find that the flare-ups don’t go away, and your skin can become scarred.

Hidradenitis suppurativa usually appears as one or more red, tender bumps that fill with pus. It most commonly occurs in the armpits (shown), groin, between the buttocks and under the breasts.

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