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ShareA blackhead (technically known as a open comedo) is a yellowish or blackish bump or plug on the skin.
An open comedo or blackhead is a type of acne vulgaris.
It is caused by excess oils that have accumulated in the sebaceous gland's duct.
For more information about the topic Blackhead, read the full article at Wikipedia.org, or see the following related articles:
Acne — Acne is an inflammatory disease of the skin, caused by changes in the pilosebaceous units (skin structures consisting of a hair follicle and its ... > read more
Skin — In zootomy and dermatology, skin is an organ of the integumentary system composed of a layer of tissues that protect underlying muscles and organs. ... > read more
Note: This page refers to an article that is licensed under the GNU Free Documentation License. It uses material from the article Blackhead at Wikipedia.org. See the Wikipedia copyright page for more details.
Editor's Note: This article is not intended to provide medical advice, diagnosis or treatment.
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