Acne is a common skin disorder. It is a chronic disease of sebaceous follicle, primarily affecting face, chest and back. The visible result is acne, which is the term used to describe blackheads, whiteheads, pimples, and cysts. An estimated 80 percent of all people between the ages of 11 and 30 have acne outbreaks at some point and it may last about 5-10 years. We also know that about 80% of acne is curable or controllable with proper self-treatment. The remaining needs a doctor’s close attention.
It starts when greasy secretions from the skin's sebaceous glands (oil glands) plug the tiny openings for hair follicles (plugged pores). If the openings are large, the clogs take the form of blackheads: small, flat spots with dark centers. If the openings stay small, the clogs take the form of whiteheads: small, flesh-colored bumps.
Both types of plugged pores can develop into swollen, tender inflammations, pimple or nodules. Nodules associated with severe cases of acne (cystic acne) are firm swellings below the skin's surface that become inflamed, tender, and sometimes infected.