This review addresses itself to the confusion over the terminology and diagnostic criteria currently in use for the bulimic disorders. It is suggested that the more specific bulimic syndromes should be delineated (e.g., bulimia nervosa), and for the remainder the severity of the disorder should be assessed in individual patients. Among possible indicators of severity, emphasis is given to the assessment of a patients determination to avoid a return to her “healthy weight” (to be defined in each patient). An account is given of two studies testing the actions of methyl amphetamine and fenfluramine in reducing bulimic behavior.