TY - CHAP M1 - Book, Section TI - Approach to the Psychiatric Patient A1 - Zun, Leslie S. A2 - Sherman, Scott C. A2 - Weber, Joseph M. A2 - Schindlbeck, Michael A. A2 - Rahul G., Patwari PY - 2014 T2 - Clinical Emergency Medicine AB - New-onset psychiatric illness requires a comprehensive emergency department work-up. Consider a medical etiology.Prior psychiatric illness with similar presentation does not require an extensive work-up.Agitated patients need immediate treatment in the emergency department.Patients with suicidal and homicidal plans or inability to care for themselves need psychiatric admission. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2024/04/20 UR - accessemergencymedicine.mhmedical.com/content.aspx?aid=1101229369 ER -