A sebaceous cyst—also known as a steatocystoma—is a fluid-filled bump under your skin that ... such as your neck, scalp, ...

Hidradenitis suppurativa (HS) is a chronic inflammatory disease that causes lumps to form under the ... The disease commonly flares up in the armpits, groin, buttocks, and in women, underneath ...

such as the armpits, groin area, buttocks, and inner thighs. It can appear as painful lumps, abscesses, or draining lesions. The lumps heal slowly, come back, and can lead to tunnels under the ...

If you have itchy armpits ... breasts, groin area, and in other body creases, such as elbows and knees. Prickly heat causes ...

boil-like nodules or cysts that form under the skin, typically in warm crevices of the body—under the arms, in the groin or buttocks, under the breasts. Originating with infected hair follicles ...