Information about Blackhead
This article is about the skin condition. For other uses, see Blackhead (disambiguation).
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Blackheads on a nose.
A blackhead (medically known as an open comedo[1] , plural comedones [2]) is a yellowish or blackish bump or plug on the skin. A blackhead is a type of acne vulgaris. It is caused by excess oils that have accumulated in the sebaceous gland's duct. Blackheads are typically caused by excessive oil and makeup, which can facilitate the multiplication of the bacterium Propionibacterium acnes, the predominant anaerobe of the normal skin flora. The substance found in these bumps mostly consists of keratin and modified sebum (an oily secretion of the sebaceous gland), which darkens (resembling dirt) as it oxidizes. [3]
For information on the causes and treatment of blackheads, see the above linked acne vulgaris.
See also
References
1. ^ Medicine.net - Medical dictionary - definition of blackhead/open comedo
2. ^ Merriam–Webster Online
3. ^ Blackhead definition at encyclopedia.com
2. ^ Merriam–Webster Online
3. ^ Blackhead definition at encyclopedia.com
Blackhead can also refer to:
In biology:
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In biology:
- Blackhead, a blocked sweat/sebaceous duct of the skin known medically as an open comedo.
- Blackhead disease, which affects poultry.
..... Click the link for more information.
Acne
Classification & external resources
Acne of a 14 year old boy during puberty
ICD-10 L 70.0
ICD-9 706.1
DiseasesDB 10765
MedlinePlus 000873
eMedicine derm/2 Acne Vulgaris
..... Click the link for more information.
Classification & external resources
Acne of a 14 year old boy during puberty
ICD-10 L 70.0
ICD-9 706.1
DiseasesDB 10765
MedlinePlus 000873
eMedicine derm/2 Acne Vulgaris
..... Click the link for more information.
The sebaceous glands are glands found in the skin of mammals.
..... Click the link for more information.
Locations and morphology
A branched type of acinar gland, these glands exist in humans throughout the skin except in the palms of the hands and soles of the feet...... Click the link for more information.
P. acnes
Binomial name
Propionibacterium acnes
(Gilchrist 1900)
Douglas & Gunter 1946
Propionibacterium acnes
..... Click the link for more information.
Binomial name
Propionibacterium acnes
(Gilchrist 1900)
Douglas & Gunter 1946
Propionibacterium acnes
..... Click the link for more information.
Keratins are a family of fibrous structural proteins; tough and insoluble, they form the hard but nonmineralized structures found in reptiles, birds, amphibians and mammals. They are rivaled as biological materials in toughness only by chitin.
..... Click the link for more information.
..... Click the link for more information.
The sebaceous glands are glands found in the skin of mammals.
..... Click the link for more information.
Locations and morphology
A branched type of acinar gland, these glands exist in humans throughout the skin except in the palms of the hands and soles of the feet...... Click the link for more information.
The sebaceous glands are glands found in the skin of mammals.
..... Click the link for more information.
Locations and morphology
A branched type of acinar gland, these glands exist in humans throughout the skin except in the palms of the hands and soles of the feet...... Click the link for more information.
Acne
Classification & external resources
Acne of a 14 year old boy during puberty
ICD-10 L 70.0
ICD-9 706.1
DiseasesDB 10765
MedlinePlus 000873
eMedicine derm/2 Acne Vulgaris
..... Click the link for more information.
Classification & external resources
Acne of a 14 year old boy during puberty
ICD-10 L 70.0
ICD-9 706.1
DiseasesDB 10765
MedlinePlus 000873
eMedicine derm/2 Acne Vulgaris
..... Click the link for more information.
A pimple is a result of a blockage of the skin's pore. See Acne vulgaris.
Inside the pore are sebaceous glands which produce sticky sebum. When the outer layers of skin shed (as it does continuously), the dead skin cells left behind may become 'glued' together by the sticky
..... Click the link for more information.
Inside the pore are sebaceous glands which produce sticky sebum. When the outer layers of skin shed (as it does continuously), the dead skin cells left behind may become 'glued' together by the sticky
..... Click the link for more information.
Whiteheads are the direct result of skin pores becoming clogged with sebum (naturally occurring oil) and dead skin cells. Whiteheads are symptoms of acne vulgaris and consist of pores blocked with sebum. Unlike blackheads the sebum is white but are otherwise similar.
..... Click the link for more information.
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Keratosis pilaris
Classification & external resources
OMIM 604093
DiseasesDB 32387
MedlinePlus 001462
eMedicine ped/1246 derm/211 Keratosis pilaris
..... Click the link for more information.
Classification & external resources
OMIM 604093
DiseasesDB 32387
MedlinePlus 001462
eMedicine ped/1246 derm/211 Keratosis pilaris
..... Click the link for more information.
P. acnes
Binomial name
Propionibacterium acnes
(Gilchrist 1900)
Douglas & Gunter 1946
Propionibacterium acnes
..... Click the link for more information.
Binomial name
Propionibacterium acnes
(Gilchrist 1900)
Douglas & Gunter 1946
Propionibacterium acnes
..... Click the link for more information.
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