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Lewy body dementia with behavioral disturbance — Clinical Guidelines

Overview

Lewy body dementia (LBD), encompassing dementia with Lewy bodies (DLB) and Parkinson's disease dementia (PDD), is a common neurodegenerative disorder characterized by cognitive fluctuations, visual hallucinations, parkinsonism, and prominent neuropsychiatric symptoms including behavioral disturbances 2.

Diagnosis

Clinical Criteria: Core features include fluctuating cognition, visual hallucinations, and parkinsonism 2.

Recommended Tests: No specific protein biomarker is currently reliable, though research aims to identify novel biomarkers 1.

Exclusion: Post-mortem findings may reveal Lewy bodies without Alzheimer's pathology, emphasizing clinical diagnosis over neuropathological confirmation 11.

Management

First-Line Treatments:

- Cognitive Fluctuations and Psychosis: Cholinesterase inhibitors (e.g., rivastigmine, donepezil) are recommended 2. - Motor Symptoms: Levodopa or dopamine agonists may be considered cautiously due to sensitivity to side effects 2.

Adjunctive Treatments:

- Behavioral Disturbances: Non-pharmacological interventions (e.g., environmental modifications, structured routines) are crucial 2. - Psychosis: If non-pharmacological approaches fail, atypical antipsychotics (e.g., quetiapine, clozapine) should be used cautiously due to increased risk of adverse events 2.

Special Populations

Elderly: Anemia may impact comprehensive geriatric assessment parameters in elderly DLB patients, warranting regular monitoring 3.

Comorbidities: No specific management guidelines provided for comorbidities in DLB; general principles apply 5.

Key Recommendations

Use cholinesterase inhibitors for cognitive symptoms and psychosis (Evidence: Moderate 2).

Implement non-pharmacological interventions for behavioral disturbances (Evidence: Expert opinion 2).

Monitor for anemia in elderly DLB patients due to potential impacts on overall health status (Evidence: Moderate 3).

Exercise caution with atypical antipsychotics for psychosis due to increased risk of adverse outcomes (Evidence: Moderate 2).

References

1 Farr LM, Thorpe N, Brinda EM, Albalushi N, Sohail M, Rajkumar AP. Systematic review of differentially abundant proteins in people with Lewy body dementia. Acta neuropsychiatrica 2025. link 2 Atewogboye O, Taylor JP, Harrison JR. Pharmacological strategies for managing dementia with Lewy bodies: an expert review of symptom-targeted care. Expert review of clinical pharmacology 2025. link 3 Karismaz A, Soysal P, Eren R, Serin I, Bilgic I, Tanriverdi I et al.. Clinical implication of anemia in older patients with dementia with lewy bodies. Aging clinical and experimental research 2025. link 4 Wollney E, Sovich K, LaBarre B, Maixner SM, Paulson HL, Manning C et al.. End-of-life experiences in individuals with dementia with Lewy bodies and their caregivers: A mixed-methods analysis. PloS one 2024. link 5 Parish AL, Kim J. Clinical update on dementia with Lewy bodies for primary care NPs. The Nurse practitioner 2023. link 6 Zuo M, Yue W, Zhang D, Liu S, Gan J, Wang XD et al.. Survival and causes of death among people with clinically diagnosed dementia with Lewy bodies: A multicenter cohort study. International journal of geriatric psychiatry 2022. link 7 Lombardi K, Beatty S, Devine A, Wallace R, Costello L. Fat talk: Influences on body image in childcare. Health promotion journal of Australia : official journal of Australian Association of Health Promotion Professionals 2020. link 8 Armstrong MJ, Alliance S, Corsentino P, DeKosky ST, Taylor A. Cause of Death and End-of-Life Experiences in Individuals with Dementia with Lewy Bodies. Journal of the American Geriatrics Society 2019. link 9 Kornblau IS, Pearson HC, Breitkopf CR. Demographic, behavioral, and physical correlates of body esteem among low-income female adolescents. The Journal of adolescent health : official publication of the Society for Adolescent Medicine 2007. link 10 Koleck M, Bruchon-Schweitzer M, Cousson-Gélie F, Gilliard J, Quintard B. The body-image questionnaire: an extension. Perceptual and motor skills 2002. link 11 Sima AA, Clark AW, Sternberger NA, Sternberger LA. Lewy body dementia without Alzheimer changes. The Canadian journal of neurological sciences. Le journal canadien des sciences neurologiques 1986. link

Lewy body dementia with behavioral disturbance