Eating Disorders Defined: What’s the Difference Between Bulimia and Anorexia Binge-Purge Type? "As defined in the Diagnostic and Statistical Manual of Mental Disorders, there are three official eating disorders diagnoses: anorexia nervosa, bulimia nervosa and eating disorder not otherwise specified (EDNOS); as well as one provisional diagnosis: binge-eating disorder. Within each diagnosis a number of different types of behaviors exist. One such type is anorexia nervosa binge-purge type. So how does this differ from bulimia, which is characterized by binge and purge behaviors? I sat down with Eating Recovery Center’s Medical Director of Adult Services, Emmett R. Bishop, Jr., MD, CEDS, and asked him five clarifying questions." Read the full blog post on what makes bulimia different than anorexia binge-purge type on chief marketing officer Julie Holland's EverydayHealth.com blog by clicking here.