What causes acne?
Worldwide there are about 60 million people who are suffering from acne. Most people develop acne during adolescence. It is most prevalent in those aged 16 to 18 years. The exact cause of acne is unknown, but doctors believe it results from several related factors. One important factor is an increase in hormones called androgens (male sex hormones). These increase in both boys and girls during puberty and cause the sebaceous glands to enlarge and make more sebum. Hormonal changes related to pregnancy or starting or stopping birth control pills can also cause acne.
The most common reasons for acne are:
There are higher levels of sex hormones at puberty than in younger children.
These hormones are converted in the skin to dihydrotestosterone (DHT) which stimulates oil glands to enlarge.
The oil glands, called sebaceous glands, produce sebum. The more sebum, the more likely it is that acne will be troublesome.
If sebum and keratin (dead skin cells) block the skin pores, comedones can develop.
The wall of the follicles may rupture.
Bacteria and comedonal debris cause acne pimples or pustules (inflammatory...
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