| Causes of Acne |
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| 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. Another factor is heredity or genetics. Researchers believe that the tendency to develop acne can be inherited from parents. For example, studies have shown that many school-age boys with acne have a family history of the disorder. Certain drugs, including androgens and lithium, are known to cause acne. Greasy cosmetics may alter the cells of the follicles and make them stick together, producing a plug. Factors That Can Make Acne Worse Factors that can cause an acne flare include: • Changing hormone levels in adolescent girls and adult women 2 to 7 days before their menstrual period starts • Friction caused by leaning on or rubbing the skin • Pressure from bike helmets, backpacks, or tight collars • Environmental irritants, such as pollution and high humidity • Squeezing or picking at blemishes • Hard scrubbing of the skin. Myths About the Causes of Acne There are many myths about what causes acne. Chocolate and greasy foods are often blamed, but foods seem to have little effect on the development and course of acne in most people. Another common myth is that dirty skin causes acne; however, blackheads and other acne lesions are not caused by dirt. Finally, stress does not cause acne. Related Topics: What is Acne? Treatment of Acne Prevention of Acne |
| This fact sheet
describes the major causes of acne breakouts and debunks some common myths
about what causes acne. This skin disorder can usually be treated with
over-the-counter medications, but in more serious cases, it's a good idea
to consult your physician or dermatologist about treatment
options. |
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| This document is
provided solely for educational and informational purposes. Be sure to consult your doctor before making any major medical decision. |
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