Eating disorder (11)
'eating disorder' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for bulimia that I've seen before include "complaint" , "Compulsive over-eating followed by self-induced vomiting" , "Problem with food" , "sickening appetite" , "Eating disorder" .)
I believe this clue is a double definition.
'eating' is the first definition.
(I know that eating can be written as consumption)
'disorder' is the second definition.
(I know that consumption is a type of endemic disease)
(Other definitions for consumption that I've seen before include "that may be conspicuous" , "disorder" , "Wasting disease" , "See 7" , "Eating" .)