comedo

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comedo

[′kä·mə‚dō]
(medicine)
A collection of sebaceous material and keratin retained in the hair follicle and excretory duct of the sebaceous gland, whose surface is covered with a black dot caused by oxidation of sebum at the follicular orifice. Also known as blackhead.
References in periodicals archive ?
Large, painful, burning or itching superficial acne lesions, as well as comedones showing significant amounts of underlying pus, oftn occur on the nose.
Isotretinoin also reduces cell shedding and the stickiness of cells in the follicles, which helps prevent the development of comedones.
Acneiform papules and open comedones with two or more "heads" (double comedones) are also typical (Figure 2).
4-6) Incidental focal acantholytic dyskeratosis similar to our patient's has previously been described in other lesions of follicular origin: comedones (5) and ruptured follicles.
They normalize cell growth in the follicle, clear existing comedones, inhibit the formation of new comedones, and enhance the skin penetration of other medications.
This 32-year-old male patient has comedones, inflammatory nodules, multiple draining sinuses, and scarring in the axillary region.
Acne vulgaris is America's most common disease and is characterized by non-inflammatory, open or closed comedones and by inflammatory papules, pustules, and nodules.
0001) were measured; the clinical sum score regarding the number of papules, papulopustules, comedones as well as sebaceous glands - activity diminished from 14.
Topical retinoids reverse abnormal desquamation of follicular corneocytes, inhibit the microcomedones that are the precursor lesions in acne, clear mature comedones, and enhance skin penetration of other medications, most importantly topical antimicrobials.
Closed comedones were present on her forehead and open comedones were present on her nose.
White heads are closed comedones that build up from excess dirt, sweat, bacteria, waste and using soapbased cleansers, which harden and clog pores even further.
A gentle, relaxing facial exfoliation treatment will remove dead skin cells, eliminate blocked pores, comedones, smooth lines and wrinkles, thus achieving a smooth radiant glowing appearance.