Hidradenitis suppurativa (HS) causes painful bumps under the skin, typically on skin folds, like the groin area, armpits, inner thighs, buttocks, and under the breasts. Bumps often begin as small ...

and in the inner thighs. In men, it’s mainly in the underarms, groin, and anal area.” The most common way to assess the severity of HS is called the Hurley staging method. Hurley Stage 1 ...