Psychiatric disorders in geriatric medical/surgical patients. Part I: Report of 195 consecutive consultations.

We reviewed psychiatric consultations (N = 195) for patients aged 60 years or more from a consecutive series of 1,000 psychiatric consultation requests. Consultations for geriatric patients were requested disproportionately less frequently than for nongeriatric patients and significantly more frequently for elderly women than for elderly men. The most frequent primary psychiatric diagnoses were organic psychiatric and depressive spectrum disorders. The referring primary care physician had either misdiagnosed or failed to recognize an underlying organic psychiatric disorder in more than half the patients with organic psychiatric illness. The study highlights the prevalent psychiatric disorders of the elderly medical/surgical patient, and opines that psychiatric consultants can be of significant assistance in the medical care of these patients.