The document summarizes major changes in the DSM-V from the DSM-IV. Key changes include: 1) Autism is now classified as autism spectrum disorder, encompassing four previous disorders. 2) Disruptive mood dysregulation disorder replaces childhood bipolar disorder. 3) Bereavement exclusion for major depressive disorder is removed. 4) Additional attention is paid to behavioral symptoms in the PTSD criteria. 5) Mild neurocognitive disorder is added to distinguish from major neurocognitive disorder. 6) Binge eating disorder, premenstrual dysphoric disorder, and hoarding disorder are now official diagnoses.