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blackhead |
Also found in: Dictionary/thesaurus, Medical, Wikipedia, Hutchinson | 0.01 sec. |
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blackhead, yellowish or blackish plug of material accumulated in the duct of a sebaceous gland. The material consists of keratin (horny cells of the epidermis) and modified sebum (oily secretions of the sebaceous gland). Blackheads are the primary lesions in acne acne, common inflammatory disease of the hair follicles and sebaceous glands characterized by blackheads , whiteheads, pustules, nodules and, in the more severe forms, by cysts and scarring. The lesions appear on the face, neck, back, chest, and arms. ..... Click the link for more information. . Treatment is the same as for acne, with frequent cleansing of the skin followed by the application of astringent solutions. Plugs should be extracted only by a physician, since damage to the surrounding tissues occasioned by squeezing often leads to scarring. |
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The basic acne lesion, called the comedo (kom'-e-do) or comedone, is simply an enlarged hair follicle plugged with oil and bacteria. |
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comedo
