“Backne” is street slang for rearmost acne. And while the contraction’s clear origin is unknown, it can be said that it comes from the fact that nearly everyone in the world has, at one point in his or her life, experienced having back acne. Indeed, back acne is universal enough to merit its personal term. Back acne knows no special target. It afflicts people from ages ten to forty; sometimes even years after that. A lot of theories have been introduced as to why back acne happens. Sadly, however, no have been tested to be the direct cause of back acne. But, before we get into that, let’s see first what constitutes back acne.