Which clinical features are most characteristic of Lewy Body dementia?

A. Loss of expressive language and comprehension: Prominent impairment in expressive language and comprehension is commonly associated with frontotemporal dementia, particularly variants affecting the frontal and temporal lobes. Cognitive changes in this condition often center on language rather than visuospatial or motor features. B. Stepwise irregular cognitive decline: A stepwise pattern of cognitive decline is linked to repeated cerebrovascular events causing cumulative neurological damage. Cognitive changes often follow discrete episodes rather than fluctuating attention or alertness. Motor findings depend on the location of vascular injury rather than basal ganglia involvement. C. Gradual memory decline without motor symptoms: Progressive memory impairment without early motor involvement aligns more closely with Alzheimer-type neurocognitive changes. Memory loss tends to be the primary early feature, with motor symptoms appearing later, if at all. D. Visual hallucinations and parkinsonian features: Lewy Body dementia frequently presents with recurrent visual hallucinations alongside motor features such as rigidity, bradykinesia, and gait instability. Fluctuations in cognition and alertness may also occur due to widespread alpha-synuclein deposition in cortical and subcortical regions.