This essential guide provides up-to-date knowledge on the epidemiology, clinical features, assessment, and treatment of common psychiatric disorders over a lifespan. It contains key points relevant to residents in training, fellows, and practitioners in private and academic settings by giving them solid information about the topics. This guide discusses the topics listed in DSM-5 TR and also contains subjects relevant to the practice of psychiatry in the 21st century, such as gender-affirming care and discussions about neuromodulation, recommendations on the use of TMS and Ketamine, and newly...