Thursday, May 10, 2007

Why There Are Acne?

By Ramzaj
Why there are spots? Mechanisms of occurrence of acne, comedones and inflammations of sebaceous glands.

The single reason of occurrence of a pimple does not exist.
Two are considered as main mechanisms of evolution of acne:

1. The reinforced production of dermal grease.
2. Blockage of an ostium of a follicle.

Activity of sebaceous glands appreciablly increases during puberty. Under effect of androgens occurrence of new crates both in a sebaceous gland, and in a follicle (keratinization) is sped up. Desquamated crates inside of a follicle becomes more. Masses of keratin, the desquamated crates, mixed with a plenty of dermal grease, can block an ostium of a follicle. So there is a cork - a comedo, or acne (the mechanism of its occurrence is shown in a picture).



Evolution of a comedo (picture).
By fingers the incremented quantity of dermal grease and desquamated crates from walls of a follicle is shown.
The hair follicle is dilated and strained.
















Evolution of a comedo (tissue specimen).
In an ostium of a hair follicle cork, the future comedo is shaped. Sebaceous glands are incremented, their ostiums are dilated.















Legends
1 - cork in an ostium of a hair follicle. 2 - the incremented sebaceous glands.

In the meantime, the reinforced production of dermal grease prolongs. Cork does not yield him an outcroping of a leather, and the follicle swells from grease. Sometimes there is a disrupture of a follicle.

In the blocked follicle bacteria collect. Activity of bacteria provokes an inflammation of a follicle. So there are inflammatory devices of a pimple - acne. The disrupture of a follicle result ins to extending of an inflammation around.

© Ramzaj
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