Review ArticleMedical comorbidity and mental disorders in older adultsKennedy, Gary J.; Frazier, AmyAuthor Information Department of Psychiatry and Behavioral Health, Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, New York, USA Correspondence to Dr G.J. Kennedy, Montefiore Medical Center, 111 East 210th Street Bronx, NY 10467-2490, USA. Tel: +1 718 920 4236; fax: +1 718-920 6538; e-mail: email@example.com Current Opinion in Psychiatry: July 1999 - Volume 12 - Issue 4 - p 451-455 Buy Abstract Comorbidity is a common characteristic of mental illness in all age groups. In younger persons, however, the comorbidity is often a manifestation of substance abuse or personality disorder complicating another major mental illness. In older adults comorbidity is most often characterized by concurrent mental and physical illness with cardiovascular and cerebrovascular diseases playing the most prominent role in both the etiology and prognosis. Excessive or persistent disability is the common ground upon which medical comorbidity and mental disorders manifest their relationship. © 1999 Lippincott Williams & Wilkins, Inc.