This document reviews DSM-5 mental disorders and provides information on alcohol use disorder. It lists 11 substance-related disorders and gambling disorder. It then describes the diagnosis of alcohol use disorder, requiring 2 of 11 symptoms in the last 12 months, and lists common comorbid disorders as bipolar disorder, schizophrenia, and antisocial personality disorder. The document outlines 6 steps for assessment and treatment: gathering history and assessing functioning, referring for evaluation, using screening tests, providing psychoeducation and treatment like CBT and 12-step programs, monitoring progress, and planning for termination of treatment.