TY - CHAP M1 - Book, Section TI - Psychiatric Disorders A1 - Reus, Victor I. A2 - Loscalzo, Joseph A2 - Fauci, Anthony A2 - Kasper, Dennis A2 - Hauser, Stephen A2 - Longo, Dan A2 - Jameson, J. Larry Y1 - 2022 N1 - T2 - Harrison's Principles of Internal Medicine, 21e AB - Psychiatric disorders are common in medical practice and may present either as a primary disorder or as a comorbid condition. The prevalence of mental or substance use disorders in the United States is ~30%, but only one-third of affected individuals are currently receiving treatment. Global burden of disease statistics indicates that 4 of the 10 most important causes of morbidity and attendant health care costs worldwide are psychiatric in origin. SN - PB - McGraw-Hill Education CY - New York, NY Y2 - 2025/02/14 UR - accessmedicine.mhmedical.com/content.aspx?aid=1204906981 ER -