One of the few good things about acne is that it hardly discriminates: With some variation, it afflicts people of all races and income levels, from all regions and countries. Acne is the eighth-most-common disease globally, affecting roughly two out of three people ages 15 to 19.

Another one of the good things? Acne may contribute to better grades and longer-term academic success, according to a forthcoming peer-reviewed study in the Journal of Human Capital by the economists Hugo Mialon and Erik Nesson, of Emory University and Ball State University, respectively.