A skin condition in which there is an increase in sebum secretion by the pilosebaceous apparatus associated with open comedones (blackheads), closed comedones (whiteheads), and pustular nodules (papules, pustules, and cysts).

Acne is a common skin disease that causes pimples. Pimples form when hair follicles under your skin clog up. Most pimples form on the face, neck, back, chest, and shoulders. Anyone can get acne, but it is common in teenagers and young adults. It is not serious, but it can cause scars. No one knows exactly what causes acne. Hormone changes, such as those during the teenage years and pregnancy, probably play a role. There are many myths about what causes acne. Chocolate and greasy foods are often blamed, but there is little evidence that foods have much effect on acne in most people. Another common myth is that dirty skin causes acne; however, blackheads and pimples are not caused by dirt. Stress doesn't cause acne, but stress can make it worse. If you have acne: Clean your skin gently; Try not to touch your skin; Avoid the sun . Treatments for acne include medicines and creams. NIH: National Institute of Arthritis and Musculoskeletal and Skin Diseases

An inflammatory disease resulting from excess sebum production, follicle plugging, and increased bacterial production.

Chronic inflammatory disease of the pilosebaceous apparatus marked by an increase in sebum secretions causing lesions most frequently occurring on the face, chest, and back; the inflamed glands may form small pink papules, which sometimes surround comedones so that they have black centers (blackheads), or form pustules or cysts (whiteheads).

Acne is a common skin condition causing pimples and other abnormalities on the face and upper torso. Acne is caused by a buildup of dead skin cells, bacteria, and dried sebum that blocks the hair follicles in the skin.

Acne is a common skin condition causing pimples and other abnormalities on the face and upper torso.

Acne is a skin condition that occurs when your hair follicles become plugged with oil and dead skin cells. It causes whiteheads, blackheads or pimples. Acne is most common among teenagers, though it affects people of all ages.

Acne, any inflammatory disease of the sebaceous, or oil, glands of the skin. There are some 50 different types of acne. In common usage, the term acne is frequently used alone to designate acne vulgaris, or common acne, probably the most prevalent of all chronic skin disorders. Acne vulgaris...