Acne is a common skin disorder caused by blocked hair follicles beneath the skin. Sebum (oil that keeps skin from drying out) and dead skin cells clog pores, resulting in outbreaks of lesions known as pimples or zits.

Acne is an inflammatory skin ailment characterized by sebaceous (oil) glands that link to hair follicles containing fine hair. In healthy skin, sebaceous glands produce sebum, which drains onto the skin’s surface via the pore, which is an opening in the follicle. Keratinocytes are skin cells that line the follicle. Keratinocytes normally rise to the skin’s surface as the body sheds skin cells. When a person gets acne, the hair, sebum, and keratinocytes become entangled inside the pore. This inhibits keratinocytes from shedding and prevents sebum from reaching the skin’s surface. The oil-cell mixture encourages bacteria that typically exist on the skin to proliferate in the blocked follicles and cause acne.

A skin condition that occurs when hair follicles plug with oil and dead skin cells

Acne is most common in teenagers and young adults.

Symptoms range from uninflamed blackheads to pus-filled pimples or large, red, and tender bumps.

Treatments include over-the-counter creams and cleansers, as well as prescription antibiotics.

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