Acne (acne vulgaris, common acne) is a disease of the hair follicles of the face, chest, and back that affects almost all teenagers during puberty -- the only exception being members of a few primitive Neolithic tribes living in isolation. It is not caused by bacteria, although bacteria play a role in its development. It is not unusual for some women to develop acne in their mid- to late-20s. Acne appears on the skin as...  Read More

Hidradenitis suppurativa commonly occurs around hair follicles with many oil and sweat glands, such as in the armpits, groin and anal area. It may also occur where skin rubs together, such as the inner thighs, under the breasts and between the buttocks. Hidradenitis suppurativa can affect one spot or multiple areas of the body. Signs and symptoms of hidradenitis suppurativa include: Blackheads. Small pit  Read More