In Brief:
Acne is a skin problem usually linked to teenagers, striking at a time when self-image is usually of the utmost importance. Acne does not only affect the face; it can affect many other parts of the body also, such as the neck, shoulders or back. Acne tends to affect a greater proportion of males than it does females, and bad news for you guys; may affect males at a higher degree of severity and longevity. Acne fulminans, acne aestivalis and acne necrotica are among the others. Acne is defined as "an inflammatory disease of the sebaceous glands and hair follicles of the skin that is marked by the eruption of pimples or pustules, especially on the face".