"hey, could you put some of this persa-gel on my back?  i've got an outbreak of backacne and i can't reach it
"a fairly common dermatological condition consisting of a rash or an outbreak of acne on ones backside
""hey, could you put some of this persa-gel on my back?  i've got an outbreak of backacne and i can't reach it" What is the definition of "backacne"?