acne vulgaris
/ˌakni vʌlˈɡɑːrɪs/ /ˌakni vʌlˈɡɛːrɪs/Medicine
noun
The most common form of acne, occurring to some degree in most adolescents, which affects the skin of the face, chest, and back, and is usually uncomplicated by the formation of large abscesses and cysts.
Origin
Mid 19th century; earliest use found in The Lancet. From scientific Latin acne vulgaris from post-classical Latin acne + classical Latin vulgāris.