These may include blackheads, whiteheads, or painful cysts. Acne commonly affects the ... or plants like poison ivy. Boils are painful, red bumps caused by bacterial infections in hair follicles ...

"You may get cysts or boils, usually in folded areas of the ... Small, pitted areas of skin that contain blackheads With mild hidradenitis suppurativa, you may only have one or a few lumps in ...