Acne vulgaris

Acne Vulgaris is an inflammatory disease of the skin, caused by changes in the pilosebaceous units (skin structures consisting of a hair follicle and its associated sebaceous gland). Acne lesions are commonly referred to as pimples, spots, plooks or "zits".Acne develops as a result of blockages in follicles. Hyperkeratinization and formation of a plug of keratin and sebum (a microcomedo) is the earliest change. Enlargement of sebaceous glands and an increase in sebum production occur with increased androgen (DHEA-S) production at adrenarche. The microcomedo may enlarge to form an open comedo (blackhead) or closed comedo (whitehead). Increased sebum production provides an environment for the overgrowth of Propionibacterium acnes. Bacterial overgrowth of Propionibacterium acnes can cause inflammation, leading to inflammatory lesions (papules, pustules, or nodules) in the dermis around the microcomedo or comedo, which may result in scarring.
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noun
inflammation of the sebaceous glands during puberty, which makes blackheads appear on the skin, usually on the face, neck and shoulders, and these then become infected; he suffers from acne; she is using a cream to clear up her acne

noun
inflammation of the sebaceous glands during puberty, which makes blackheads appear on the skin, usually on the face, neck and shoulders, and these then become infected; he suffers from acne; she is using a cream to clear up her acne

Noun
1. the most common form of acne; usually affects people from puberty to young adulthood
(hypernym) acne