Tuesday, November 15, 2005

 

What causes Acne?

All acne is a disorder of the pilosebaceous unit, which is made up of a hair follicle, sebaceous gland, and a hair. These units are found everywhere on the body except on the palms, soles, top of the feet, and the lower lip. The number of pilosebaceous units is greatest on the face, upper neck, and chest. Sebaceous glands produce a substance called sebum, which is responsible for keeping the skin and hair moisturized. During adolescence sebaceous glands enlarge and produce more sebum under the influence of hormones, also called androgens. After about age 20, sebum production begins to decrease.

Several factors are known to be linked to acne:
* Hormonal activity
* Hyperactive sebaceous glands
* Accumulation of dead skin cells
* Bacteria in the pores
* Skin irritation or scratching of any sort
* Anabolic steroids
* Birth control pills, however many women have reported reduced acne while on the pill
* Exposure to high levels of chlorine compounds, particularly chlorinated dioxins, can cause severe, long-lasting acne, known as Chloracne

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