Psychotic Symptoms In The Elderly
A study in the December 2007 issue of the American Journal of Geriatric Psychiatry examines the prevalence of psychotic symptoms and schizophrenia in nondemented 95-year-olds over a one-year period. A sample of 338 95-year-olds living in Göteborg, Sweden (individuals with dementia were excluded leaving 163 subjects for this study) received psychiatric and physical examinations as well as cognitive tests and interviews with close informants. The results indicated that the one-year prevalence of any psychotic symptom was 7.4% overall (hallucinations 6.7% and delusions 0.6% ). Four of the study participants met DSM-III-R criteria for schizophrenia (2.4%). No differences in cognitive functioning were found between individuals with psychotic symptoms and individuals without these symptoms. Individuals with hallucinations and paranoid ideation also had an increased frequency of paranoid personality traits. The authors concluded that there was evidence of a higher than expected prevalence of psychotic symptoms, paranoid ideation, and schizophrenia in the very old.
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