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'''Acne''' is an infection of the [[skin]], caused by changes in the [[sebaceous gland]]s. The most common form of acne is called '''acne vulgaris''', which means "common acne". The redness comes from the inflammation of the skin in response to the infection.

'''Acne''' is an infection of the [[skin]], caused by changes in the [[sebaceous gland]]s. The most common form of acne is called '''acne vulgaris''', which means "common acne". The redness comes from the [[inflammation]] of the skin in response to the infection.

Oils from the [[gland]]s combine with dead skin [[cell]]s to block [[hair follicle]]s. Under the blocked pore, oil builds up. Skin bacteria can then grow very quickly. This infection makes the skin become swollen and red, which becomes visible.

Oils from the [[gland]]s combine with dead skin [[cell]]s to block [[hair follicle]]s. Under the blocked pore, oil builds up. Skin [[bacteria]] can then grow very quickly. This infection makes the skin become swollen and red, which becomes visible.

The [[face]], [[chest]], [[body|back]], and upper [[arm]]s are most common places for acne to happen.

The [[face]], [[chest]], [[body|back]], and upper [[arm]]s are most common places for acne to happen.

* Many dead skin cells staying on the skin

* Many dead skin cells staying on the skin

* Bacteria in the [[Pore (skin)|pores]]

* Bacteria in the [[Pore (skin)|pores]]

* Diet<ref name="dietandacne">{{cite journal|author1=Elsa H. Spencer|author2=Hope R. Ferdowsian|author3=Neal D. Barnard|orig-year=19 March 2009|title=Diet and acne: a review of the evidence|url=https://onlinelibrary.wiley.com/doi/full/10.1111/j.1365-4632.2009.04002.x|edition=International Journal of Dermatology|publisher=The International Society of Dermatology|publication-date=19 March 2009|doi=10.1111/j.1365-4632.2009.04002.x|access-date=28 January 2019|journal=International Journal of Dermatology|year=2009|volume=48|issue=4|pages=339–347|pmid=19335417|s2cid=16534829}}</ref>

* Diet<ref name="dietandacne">{{cite journal|author1=Elsa H. Spencer|author2=Hope R. Ferdowsian|author3=Neal D. Barnard|orig-year=19 March 2009|title=Diet and acne: a review of the evidence|url=https://onlinelibrary.wiley.com/doi/full/10.1111/j.1365-4632.2009.04002.x|edition=International Journal of Dermatology|publisher=The International Society of Dermatology|publication-date=19 March 2009|doi=10.1111/j.1365-4632.2009.04002.x|access-date=28 January 2019|journal=International Journal of Dermatology|year=2009|volume=48|issue=4|pages=339–347|pmid=19335417|s2cid=16534829| issn=0011-9059 }}</ref>

Aspirin reduces inflammation which in result, reduces facial redness due to acne.

Aspirin reduces inflammation which in result, reduces facial redness due to acne.

* Killing the bacteria that grow in the blocked follicles. This can be done by ingesting antibiotic medication, or by putting antibiotics on the skin. Antibiotics act quickly and are a powerful way of temporarily getting rid of acne. When the body develops a resistance to the antibiotics, the bacteria returns stronger than before.

* Killing the bacteria that grow in the blocked follicles. This can be done by ingesting antibiotic medication, or by putting antibiotics on the skin. Antibiotics act quickly and are a powerful way of temporarily getting rid of acne. When the body develops a resistance to the antibiotics, the bacteria returns stronger than before.

* Removing oil on the skin can be done by taking drugs that contain [[Vitamin A]]. Accutane is the name of the most famous treatment using massive quantities of Vitamin A.

* Removing oil on the skin can be done by taking drugs that contain [[Vitamin A]]. Accutane is the name of the most famous treatment using massive quantities of Vitamin A.

* Removing dead skin cells can be done by treatment with salicylic acid. This encourages the skin to peel away the top layer of cells.

* Removing dead skin cells can be done by treatment with [[salicylic acid]]. This encourages the skin to peel away the top layer of cells.

* Diet: studies have shown that acne is quite rare in areas with different diets, and particular food items have been shown to exacerbate acne.<ref name="dietandacne" />

* Diet: studies have shown that acne is quite rare in areas with different diets, and particular food items have been shown to exacerbate acne.<ref name="dietandacne" />

* Chemical peels. Different types of [[acid]] are put on the skin so that a smoother layer can form.

* Chemical peels. Different types of [[acid]] are put on the skin so that a smoother layer can form.

* Subcision. A hole is made between the scar and the skin under the scar. Blood can pool under the scar, and raise it to the surface of the skin.

* Subcision. A hole is made between the scar and the skin under the scar. Blood can pool under the scar, and raise it to the surface of the skin.

== Common Myths About Acne ==

== Common myths ==

* '''Myth: Only teenagers get acne.'''

* '''Myth: Only teenagers get acne.'''

== Acne Media ==

== Acne Media ==

<gallery widths='160px' heights='100%' mode='traditional' caption=''>

<gallery widths='160px' heights='100%' mode='traditional' caption=''>

File:Comedo.png|Simplistic representation of the formation of acne comedones.

File:Comedo.png|Simplistic representation of the formation of acne comedones

File:Blausen 0811 SkinPores.png|Hair follicle anatomy demonstrating a healthy hair follicle (pictured left), a whitehead or closed comedo (middle picture), and a blackhead or open comedo (pictured right)

File:Blausen 0811 SkinPores.png|Hair follicle anatomy demonstrating a healthy hair follicle (pictured left), a whitehead or closed comedo (middle picture), and a blackhead or open comedo (pictured right)

File:Jar of 'Domolene' ointment, London, England, 1945-1965 Wellcome L0058221.jpg|[[Domolene]] ointment, a mid-1900s medication that was claimed to cure acne

File:Jar of 'Domolene' ointment, London, England, 1945-1965 Wellcome L0058221.jpg|[[Domolene]] ointment, a mid-1900s medication that was claimed to cure acne

</gallery>

</gallery>

== Other websites ==

== Other websites ==

* [http://www.niams.nih.gov/hi/topics/acne/acne.htm Questions and Answers About Acne, from the U.S. National Institutes of Health]

* [http://www.niams.nih.gov/hi/topics/acne/acne.htm Questions and Answers About Acne, from the U.S. National Institutes of Health]

[[Category:Diseases caused by bacteria]]

[[Category:Diseases caused by bacteria]]

[[Category:Skin problems]]

[[Category:Skin problems]]