How Does Acne Vulgaris Develop?
Acne vulgaris occurs when hair follicles become clogged with skin secretions called sebum. These start off as small, irritated pores known as microcomedo. If the irritation persists, then the pore can turn into a blackhead, known to dermatologists as a comedone, or a milia, which is a closed comedone. The large, red, puffy pores easily identified as pimples are caused by inflammation.
