Two types-purging and nonpurging.
In young women risk is 2-5%.
Characterized by binge-eating episodes, often followed by purging behaviors such as vomiting or the use of laxatives.
30-70% have drug abuse.
45% have good outcomes, 18% have intermediate outcomes, and 21% have poor outcomes.
Patients who have borderline personality disorder have poor outcomes compared in those without this disorder, when treating with psychotherapy.