A nurse is caring for a client who has experienced a stroke and exhibits parkinsonian effects. The client’s cognition fluctuates. Which of the following types of dementia should the nurse expect the client to have?

Choice A reason: Frontotemporal lobar degeneration affects the frontal and temporal lobes, causing personality changes, language difficulties, and behavioral issues. It does not typically present with parkinsonian effects or fluctuating cognition, which are specific to Lewy body disease. The client’s stroke and parkinsonian symptoms make this diagnosis unlikely. Choice B reason: Prion diseases, like Creutzfeldt-Jakob disease, cause rapid cognitive decline, myoclonus, and ataxia due to misfolded proteins. They do not typically feature parkinsonian effects or fluctuating cognition linked to stroke. The client’s symptoms align more with Lewy body disease, making prion disease an incorrect diagnosis. Choice C reason: HIV-associated dementia results from HIV infection affecting the brain, causing cognitive impairment, motor dysfunction, and mood changes. While motor symptoms may occur, parkinsonian effects and fluctuating cognition are more characteristic of Lewy body disease, especially post-stroke, making HIV infection less likely in this context. Choice D reason: Lewy body disease is characterized by parkinsonian symptoms (tremors, rigidity) due to alpha-synuclein deposits in the brain, often following stroke, and fluctuating cognition, including attention deficits and visual hallucinations. These match the client’s symptoms, as stroke can exacerbate Lewy body pathology, making this the most likely diagnosis.