One of the mysteries of the English language finally explained.
- technical term for blackhead (sense 1)
- ‘A closed comedo, or white head, occurs when the blockage is complete.’
- ‘This obstruction leads to the formation of comedones, which can become inflamed because of overgrowth of Propionibacterium acnes.’
- ‘Certain occupations and activities seem to favour the formation of comedones or acne.’
- ‘The basic acne lesion, called the comedo (KOM-e-do), is simply an enlarged and plugged hair follicle.’
- ‘If the plug enlarges and is on the surface of the skin, exposed to the air, it is called an open comedo, or blackhead.’
- ‘The first technique works wonders in treating large boils, abscesses (whether hot or cold), and evidently, also big or tight clusters of acne pustules and comedones.’
- ‘If the plugged follicle, or comedo, stays beneath the skin, it is called a closed comedo or whitehead.’
- ‘It most often manifests in adolescents as comedones, papulopustules, and nodulocysts.’
- ‘This is a chronic inflammation of the hair follicle and sebaceous gland (pilosebaceous unit) characterized by pustules, comedones, cysts, and scars, and it affects most adolescents.’
- ‘This results in enlargement of the sebaceous glands, which can eventually lead to the development of comedones (black-heads).’
- ‘This subtype resembles acne vulgaris, but with the absence of comedones.’
- ‘If the lipid material accumulates in the hair follicle, we have the formation of comedones, or blackheads.’
- ‘Steroid-induced acne often is of a distinctive variety, being predominantly formed of inflammatory papules and pustules, which are often small and uniformly sized, with few comedones.’
- ‘In the patient with comedones and inflammatory lesions, a comedolytic agent such as tretinoin, adapalene or azelaic acid may be combined with benzoyl peroxide or a topical antibiotic.’
- ‘Retinoids, which are derivatives of vitamin A, function by slowing the desquamation process, thereby decreasing the number of comedones and microcomedones.’
Mid 19th century: from Latin, literally ‘glutton’, from comedere ‘eat up’, from com- ‘altogether’ + edere ‘eat’. Used formerly as a name for parasitic worms, the term here alludes to the worm-like matter which can be squeezed from a blackhead.
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