Uploaded on Jun 5, 2010
The common type of acne is called acne vulgaris. It is a condition that mainly affects adolescents but may persist or even become more severe in adulthood. Most, but not all, acne patients have oily skin (seborrhoea).
Acne vulgaris may occur on the face, chest, back and sometimes even more extensively. Several types of acne spots occur, often at the same time.
Open comedones (blackheads)
Closed comedones (whiteheads)
Uninflamed nodules (sometimes called cysts)
Papules (small red bumps)
Pustules (white or yellow 'squeezable' spots)
Inflamed nodules (large red lumps)
Excoriations (picked or scratched spots)
Erythematous macules (red marks from recently healed spots, mostly in fair skin)
Pigmented macules (dark marks from old spots, mostly in dark skin)
Individual acne lesions usually last less than two weeks but the deeper papules and nodules may persist for months.
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