Neurocognitive similarities between severe chronic schizophrenia and behavioural variant frontotemporal dementia

Hui-Minn Chan, Renerus-John Stolwyk, Joanna Neath, Wendy Kelso, Mark Walterfang, Ramon Mocellin, Christos Pantelis, Dennis Velakoulis

Research output: Contribution to journalArticleResearchpeer-review

11 Citations (Scopus)

Abstract

This study focuses on a group of patients with chronic schizophrenia who have a more severe form of the disorder, as indicated by socio-functional decline, treatment resistance, and recurrent hospitalisation. Previous research has suggested that the pattern and severity of cognitive deficits in people with severe chronic schizophrenia is similar to that observed in behavioural variant frontotemporal dementia (bvFTD). In the current study, we compared neurocognitive performance in 16 cognitive domains in 7 inpatients with severe chronic schizophrenia, 13 community-dwelling outpatients with chronic schizophrenia, 12 patients with bvFTD, and 18 healthy controls. Our findings revealed more similar cognitive profiles between the schizophrenia inpatient and bvFTD groups compared to the schizophrenia outpatient group, who outperformed the former groups. The current results provide preliminary evidence for a distinct schizophrenia subgroup, distinguishable from other chronic schizophrenia patients by poorer clinical and functional status, who have levels of cognitive impairment comparable to those seen in bvFTD patients
Original languageEnglish
Pages (from-to)658 - 666
Number of pages9
JournalPsychiatry Research
Volume225
Issue number3
DOIs
Publication statusPublished - 2015

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