closed comedo

closed comedo
a comedo whose opening is not widely dilated, so that it appears as a small flesh-colored papule; because the keratin and sebum produced cannot escape, it may rupture and cause an inflammatory lesion in the dermis. Called also whitehead.

Closed comedones.


Medical dictionary. 2011.

Look at other dictionaries:

  • Comedo — (plural: comedones) may refer to: Blackhead (an open comedo) Whitehead (a closed comedo): non inflamed pore blocked with sebum, a symptom of acne vulgaris This disambiguation page lists articles associated with the same title. If an …   Wikipedia

  • Comedo — The primary sign of acne consisting of a dilated (widened) hair follicle filled with keratin squamae (skin debris), bacteria, and sebum (oil). A comedo may be closed or open. A closed comedo has an obstructed opening to the skin and may rupture… …   Medical dictionary

  • Comedo extraction — is a widely used method of treatment for acne vulgaris.[1] A dermatologist or cosmetologist may extract blackheads (open comedones) using gentle pressure around the pore opening, and whiteheads (closed comedones) by incision with a large needle… …   Wikipedia

  • Comedones — The plural of comedo, the primary sign of acne, consisting of a dilated (widened) hair follicle filled with keratin squamae (skin debris), bacteria, and sebum (oil). Comedones may be closed or open. A closed comedo has an obstructed opening to… …   Medical dictionary

  • Whitehead — A familiar term for what is medically called a closed comedo. A comedo, the primary sign of acne, consists of a dilated (widened) hair follicle filled with keratin squamae (skin debris), bacteria, and sebum (oil). A whitehead is a comedo that has …   Medical dictionary

  • Blackhead — A familiar term for what is medically called an open comedo. A comedo, the primary sign of acne, consists of a dilated (widened) hair follicle filled with keratin squamae (skin debris), bacteria, and sebum (oil). An open comedo has a wide opening …   Medical dictionary

  • Blackhead — This article is about the skin condition. For other uses, see Blackhead (disambiguation). Blackhead Classification and external resources Blackheads on a nose. ICD 9 …   Wikipedia

  • acne — acned, adj. /ak nee/, n. Pathol. an inflammatory disease of the sebaceous glands, characterized by comedones and pimples, esp. on the face, back, and chest, and, in severe cases, by cysts and nodules resulting in scarring. Also called acne… …   Universalium

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