Acne is the common cause of spots. Most people with acne are aged between 12 and 25, but some older and younger people are affected. Boys are more commonly affected than girls. Acne usually affects the face but may also affect the back, neck, and chest. The severity can range from mild to severe. About 9 in 10 teenagers develop some degree of acne. Often it is mild. However, it is estimated that about 3 in 10 teenagers have acne bad enough to need treatment to prevent scarring. Untreated acne usually lasts about 4-5 years before settling. However, it can last for many years in some cases.
Process of Acne
P. acnes is the bacterium responsible for inflamed acne breakouts. P. acnes are regular residents within the hair follicle. Normally, they are harmless. However, in acne prone skin the P. acnes population grows out of control. When a come do (the obstruction of pore is called a come do) blocks the pore opening, it creates an anaerobic environment, or a lack of oxygen within the follicle. This anaerobic environment, along with excess sebum within the pore, creates a favorable environment where P. acnes bacteria can thrive. As the follicle becomes filled with sebum, dead cells, and bacteria, it begins to swell. The follicle wall ruptures and spills into the dermis. White blood cells rush in to fight the bacteria. Redness and swelling occurs, and pus is created.
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