blackhead
acne
Also known as: comedo, comedones
Learn about this topic in these articles:
primary lesion of acne
- In acne
…vulgaris is the comedo, or blackhead, which consists of a plug of sebum (the fatty substance secreted by a sebaceous gland), cell debris, and microorganisms (especially the bacterium Propionibacterium acnes) filling up a hair follicle. Comedones may be open, their upper or visible portion being darkened by oxidative changes, or…
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