What causes acne?

When puberty begins, young people begin to experience a wide variety of developmental physical, physiological and emotional changes. The obvious physical changes include beard and muscle development in young males, and young females, with the onset of menses, also start to develop breasts and wider hips. In addition, the normal progressions toward adulthood produce rapid hormone changes frequently causing mood swings and the often embarrassing side effect of Acne Vulgaris.
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