This document provides information on Obsessive-Compulsive Disorder (OCD) and Body Dysmorphic Disorder (BDD). It defines the key features of each disorder, including common obsessions and compulsions in OCD and preoccupations in BDD. Diagnostic criteria are outlined for both disorders according to the DSM-5. Risk factors, prevalence, development and course, and treatment options including medications and psychotherapy are also summarized. Celebrities who have been open about living with each disorder are mentioned.