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Acne - Symptoms and causes - Mayo Clinic

Acne is a skin condition that occurs when your hair follicles become plugged with oil and dead skin cells. It often causes whiteheads, blackheads or pimples, and usually appears on the face, forehead, chest, upper back and shoulders. Acne is most common among teenagers, though it affects people of all ages..

Acne - Wikipedia

Acne, also known as acne vulgaris, is a long-term skin disease that occurs when dead skin cells and oil from the skin clog hair follicles. Typical features of the condition include blackheads or whiteheads, pimples, oily skin, and possible scarring..

Acne: Causes, Risk Factors, and Treatment

Acne occurs when the pores of your skin become blocked with oil, dead skin, or bacteria. Each pore of your skin is the opening to a follicle. The follicle is made up of a hair and a sebaceous (oil)....

Acne Center: Blackheads, Cystic Acne, Whiteheads, Scarring ...

Most people develop acne -- the most common skin condition -- to some degree, but it primarily affects teenagers undergoing hormonal changes. Acne may be mild (few, occasional pimples), moderate....

Causes and Treatment of Acne - WebMD

Acne is primarily a hormonal condition driven by male or ‘androgenic’ hormones, which typically become active during the teenage years. Sensitivity to such hormones, combined with bacteria on the....

Acne | Johns Hopkins Medicine

Acne is a disorder of the hair follicles and sebaceous glands that become clogged. This leads to pimples and cysts. Acne is a common condition that usually begins during puberty because of hormonal changes. Acne can be either superficial or deep..