This document provides information about personality disorders as categorized in the DSM-5. It discusses 10 specific personality disorders separated into 3 clusters: odd/eccentric, dramatic/emotional/erratic, and anxious/fearful. For each cluster, it describes some representative disorders and their diagnostic criteria. It notes that personality disorders typically emerge in adolescence/early adulthood and can be difficult to treat. The document also discusses issues with the categorical approach to personality disorders and limitations in reliability and validity. It provides some information about prevalence, risk factors, differential diagnosis, and treatments for several specific disorders.