Treating patients with eating disorders (ED) is a notoriously challenging undertaking. Patients tend to be medically compromised and have a deep ambivalence towards their symptoms, and treatment dropout and relapse rates are high. Further complicating matters, a sizable number of patients present with additional characteristics that set them apart from the patients for whom empirically supported treatments were developed. Up to 50% of current ED diagnoses are classified as atypical and do not fit into existing diagnostic categories, and many more present with complex comorbidities....