Authors
Takahide Fukatsu, Kouhei Fujita, Taro Yoshida, Mihoko Kawai, Jun Miyata
Published in
Psychogeriatrics : the official journal of the Japanese Psychogeriatric Society. Volume 26. Issue 5. Pages e70204.
Abstract
This study aimed to assess the efficacy and safety of electroconvulsive therapy (ECT) for treating psychiatric symptoms and parkinsonism in patients affected by dementia with Lewy bodies (DLB), its prodromal phase, and Parkinson's disease dementia (PDD).
We retrospectively reviewed eight patients (four males, four females; mean age 71.5 ± 8.9 years) diagnosed with probable DLB or its prodromal phase, based on diagnostic criteria, who underwent ECT between January 2020 and December 2025. The efficacy and safety of ECT for psychiatric symptoms was evaluated using the Brief Psychiatric Rating Scale (BPRS) before and after treatment, and parkinsonism was assessed based on pre- and post-Hoehn-Yahr (HY) stage. Changes in scores were statistically analysed using the Wilcoxon signed-rank test. Adverse effects occurring during and after ECT were also recorded.
Three patients underwent ECT using the dose-titration method, while the others were treated using the half-age method. One patient experienced recurrent delirium following ECT, while no complications were noted in the other patients. There was a significant improvement in BPRS score observed (Wilcoxon signed-rank test, p = 0.012), though no significant change was noted in HY stage (p = 0.197).
These results suggest that ECT is a safe, well-tolerated, and effective treatment for patients with psychiatric-onset prodromal DLB, or mild DLB who present pharmacotherapy-resistant psychiatric symptoms. ECT may be a viable therapeutic option for DLB, particularly in an early stage of dementia.
PMID:
42604817
Bibliographic data and abstract were imported from PubMed on 17 Aug 2026.
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