Páginas: 2 (491 palabras) Publicado: 19 de noviembre de 2011
What is Acne? What Causes Acne?
The word acne comes from the word acme meaning "the highest point", which comes from the Greek akme meaning "point" or "spot" - it was originally mispelt, with an'n' rather than an 'm' in 1835.

Acne is a disease that involves the oil glands of the skin. It is not dangerous, but can leave skin scars. Your skin has pores (tiny holes) which connect to oilglands located under the skin. The glands are connected to the pores via follicles - small canals. Sebum, an oily liquid, is produced by these glands. The sebum carries dead skin cells through thefollicles to the surface of your skin. A small hair grows through the follicle out of the skin. Pimples grow when these follicles get blocked.

In humans, when pimples appear they tend to do so on thepatient's face, back, chest, shoulders and neck. Acne develops when follicles get blocked and infected.

Simply put - skin cells, sebum and hair can clump together into a plug, this plug gets infectedwith bacteria, resulting in a swelling. A pimple starts to develop when the plug begins to break down.
What causes acne?
Nobody is completely sure what causes acne. Experts believe the primary causeis a rise in androgen levels - androgen is a type of hormone. Androgen levels rise when a human becomes an adolescent. Rising androgen levels make the oil glands under your skin grow; the enlargedgland produces more oil. Excessive sebum can break down cellular walls in your pores, causing bacteria to grow.

Some studies indicate that susceptibility to acne could also be genetic. Somemedications which contain androgen and lithium may cause acne. Greasy cosmetics may cause acne in some susceptible people. Hormone changes during pregnancy may cause acne to either develop for the first time,or to recur.

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The topic of this comment is about acné .
The acné is one trouble most important for...
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