The document discusses causes and management of violence and suicide. The most common causes are depression for suicide and substance intoxication/withdrawal for violence. It is important to rule out medical conditions and substance use before making a psychiatric diagnosis. Certain psychiatric disorders like depression, bipolar disorder, and schizophrenia are related to violence and suicide risk. Safety is the top priority for violent patients, which may require restraints, verbal de-escalation, or chemical sedation with haloperidol and diazepam. High-risk suicidal patients should be involuntarily hospitalized based on risk factors.