ArticleJournal of Alzheimer's disease : JAD2026
Non-motor symptoms questionnaire-based profiles in early-stage dementias: A prospective cohort study.
Article in Journal of Alzheimer's disease : JAD, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
BackgroundCurrent knowledge regarding the nature and prevalence of non-motor symptoms across different types of dementia is limited. While Alzheimer's disease (AD), behavioral variant frontotemporal dementia (bvFTD), and dementia with Lewy bodies (DLB) are primarily characterized by cognitive and motor symptoms, several other features such as non-motor symptoms are also known to occur in all these conditions.ObjectiveTo assess non-motor symptoms in early-stage dementia and characterize symptom profiles across different neurodegenerative dementia diseases.MethodsA total of 64 AD, 38 bvFTD, and 17 DLB early-stage patients, along 63 cognitively healthy controls (HC), were prospectively recruited from Kuopio and Oulu University Hospitals. Non-motor symptoms were evaluated using the Non-Motor Symptoms Questionnaire (NMSQ), focusing on gastrointestinal, neuropsychiatric, cognitive, sleep-related and sensory-motor domains within three timeframes prior to the baseline visit.ResultsDLB patients exhibited the highest prevalence of non-motor symptoms across all domains. bvFTD and AD patients did not show disease group specific symptoms, but apathy and paranoidal thoughts appeared earlier in bvFTD than AD or DLB. Diplopia was reported by 14% of DLB patients (Fisher exact test,
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