Numerous studies have shown that individuals with eating disorders (EDs) have statistically higher rates of OCD and vice versa, yet there has been no comprehensive book dedicated to their comorbidity. This clinical guide fills that gap and provides a tool for health professionals working with patients presenting with both diagnoses. This book reviews the existing literature on the comorbidity of these disorders, and the perspectives of the authors' clinical practice working with OCD and EDs. Chapters cover clinical pitfalls, assessment, and suggested treatments, detailing the overlap between both illnesses and how comorbidity changes the overall presentations. The authors provide evidence-informed clinical suggestions for existing treatments, in addition to several case study examples, to highlight ways in which to better improve care for patients. A must-read for clinicians who have either experience with or want to expand their knowledge on how to assess and treat the co-occurrence of OCD and EDs.