MGH/McLean Residency Training Program in Psychiatry

Massachusetts General Hospital and McLean Hospital, Harvard Medical School

Edition Massachusetts General Hospital, 1999

PART 3 / CH 43

Late-Onset Psychosis

Roy Perlis

New-onset psychosis (age ³65)

Diagnosis%
Dementia40
Major Depression33
Medical etiologies

(seizure, hypothyroid, Parkinson’s, hyperglycemia, UTI)

7
Delirium7
Bipolar Disorder5
Med Toxicity4
Delusional Disorder2
Schizophrenia1
Schizoaffective1

source: Webster J, Grossberg T (1998) Am J Geriatr Psychiatry 6:196-202.