
What is it caused by, how do I get it?
During puberty the production of male sex hormones increases in both girls and boys, which can stimulate the sebaceous glands to produce more sebum. With some people, the sebaceous glands are extremely sensitive to androgens which may have to be medically treated.
The increased production of sebum makes the openings of the sebaceous glands narrower, which prevents the sebum from getting out. The sebum production continues regardless. Pimples are often caused by propionebacterium acnes, a common bacterium on the skin that feeds the sebum. This bacterium produces waste products and fatty acids that irritate the sebaceous glands and make them inflamed.
How do I get rid of this?
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