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Blackheads:
Description with
pictures Evaluation
Treatments
A blackhead
(medically known as an open comedo, plural comedomes) is a yellow or
blackish bump or plug on the skin. A blackhead is a type of acne vulgaris. Contrary to the
common belief that it is caused by poor hygiene, blackheads are caused by excess oils that
have accumulated in the sebaceous gland’s duct. The substance found in these bumps
mostly consists of keratin and modified sebum (an oily secretion of the sebaceous gland),
which darkens as it oxidizes. Clogged hair follicles, where blackheads often occur, reflect
light irregularly to produce a blackhead's "black" hue. For this reason, the blockage might
not necessarily look black when extracted from the pore, but may have a more yellow-
brown color as a result of its melanin content.
In contrast, a "whitehead" (more commonly known as a pimple or a closed comedo) is
a follicle that is filled with the same material, sebum, but lacks a small opening to the
skin surface. Since the air cannot reach the follicle, the material is not oxidized, and
remains white.
Video of treatment…
Summary of Contents for Skin classic
Page 7: ...Telangiectasia Description with Pictures Evaluation Treatments Prognosis ...
Page 21: ...Flat Hyperpigmentation Descriptionwith pictures Evaluation TreatmentsPrognosis ...
Page 29: ...Skin Tags Description with pictures Evaluation Treatments Prognosis Skin Tag ...
Page 35: ...Melasma Description with pictures Evaluation Treatments Prognosis ...