open comedo

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comedo /com·e·do/ (kom´ĕ-do) pl. comedo´nes a plug of keratin and sebum within the dilated orifice of a hair follicle, frequently containing the bacteria Propionobacterium acnes, Staphylococcus albus, and Pityrosporon ovale.

closed comedo whitehead; a comedo whose opening is not widely dilated, appearing as a small, flesh-colored papule; it may rupture and cause an inflammatory lesion in the dermis.

open comedo blackhead; a comedo with a widely dilated orifice in which the pigmented impaction is visible at the skin surface.

open comedo

See blackhead.

comedo [kom´ĕ-do] (pl. comedo´nes) (L.)

a plug of keratin and sebum within the dilated orifice of a hair follicle frequently containing the bacteria Corynebacterium acnes, Staphylococcus albus, and Pityrosporum ovale; see also acne vulgaris.

closed comedo whitehead (def. 1).

open comedo blackhead.

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blackhead closed comedo comedo comedones			Closed comedo or white head, and Open comedo or black head. Acne ? Types, Causes and Treatments by Jason Uvios / Health care industry community A closed comedo (whitehead) is when a plug sits below the skin while an open comedo (blackhead) is pushed out to the surface of the skin. Beauty Tips Acne Skin Care Treatment by Francis Adam / Health, general community			opal mutation Opal tissue ablation device opalescent Opalina opaque OPAT OPCAB OPCS OPD OPD syndrome open open amputation open architecture open artery theory open biopsy open bite Open Book Fracture open capsulotomy open chain open chain compound open charting open chest massage open circuit open circuit method open colectomy open comedo open contact Open Disclosure open dislocation open dissipative system open drainage open drop anesthesia open drop technique open enrollment open flap open focus open formulary open fracture open fracture grading system open heart surgery open hospital open lung biopsy open magnetic resonance imaging open medical staff open MRI open nucleus breeding scheme open operation open panel open PHO open pneumothorax open protocol system			Open Cluster NGC 4755 Open clusters Open clusters open coast Open Code Software Library open colectomy Open Collaboration Environment Open Collaboration Services Initiative Open Collaborative Grid Service Architecture Open Collaborative Research Open Collections Program Open collector Open Collector Interface Open College Open College Network Open College Network - Kent and Medway Open College Network London Region Open College Network North West Midlands Open College Network of the West Midlands Open College Network South East Midlands Ltd. Open College Network South West Open College Network South West Region Open College Network South Yorkshire and Humber Open College Network West and North Yorkshire Open College North West open comedo Open Communications Networks Inc. Open communion Open community Open community Open Community Knowledge Hypermedia Administration and Metadata Open Compact Exchange Open Compatibility License open competitive selection open competitive selection Open Compliance and Ethics Group Open Components for Controlled Access to Multimedia Material Project Open Components for Embedded Real-time Applications Open Computer Forensics Architecture Open Computer Network Open computing Open computing Open Computing 4, LLC Open Computing Facility Open Computing Infrastructure Open Computing Language Open Computing Security Group Open Concept Internet Inc. Open Concepts Bulletin Board Open Conditional Content Access Management Open Constitution Initiative open construction open contact

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