Very Late-onset Schizophrenia-Like Psychosis: Case Report and Current Status of the Issue

Abstract

Introduction

Schizophrenia has traditionally been considered to strictly be an early-onset disorder. Current nosologies, including DSMV, are not restrictive with age of onset in schizophrenia and all patients that satisfy diagnostic criteria fall into the same category. Since 1998, International Late-Onset Schizophrenia Group consensus, patients after 60 are classified as very-late onset schizophrenia-like psychosis. Female overrepresentation, low prevalence of formal thought disorder, and a higher prevalence of visual hallucinations are associated with later age at onset. Atypical antipsychotics represent the election treatment because of the reduced likelihood of EPS and tardive dyskinesias, and should be started at very low doses, with slow increases.

Objective

To review the current knowledge about very late-onset schizophrenia through systematic review of the literature and the analysis of a case.

Methods

Case Report. Review. Literature sources were obtained through electronic search in PubMed database of last fifteen years.

Results

We present a case of a 86-year-old woman suffering from delusions and hallucinations, diagnosed with very late-onset schizophrenia-like psychosis, after differential diagnosis with other disorders. We analyze ethiology, epidemiology, clinical features and treatment in geriatric patients with schizophrenia.

Conclusions

Reluctance to diagnose schizophrenia in old people is still present today, probably in relation with the inconsistency in diagnostic systems and nomenclature, and consideration of medical conditions in the diagnosis. Identification of these patients is really important in order to start an appropriate treatment, which can lead to patient clinical stability.

Disclosure of interest

The authors have not supplied their declaration of competing interest.