Parkinson’s disease and Alzheimer’s disease are neurodegenerative disorders that affect the nervous system (gradual damage to brain cells).
As with other progressive brain disorders, they are linked to an accumulation of specific proteins in the brain. However, these disorders are characterized by a unique combination of symptoms and a distinct protein buildup in specific brain regions.
Although uncommon, it is possible to have both conditions simultaneously. Alzheimer’s disease produces dementia invariably, but Parkinson’s disease, a movement illness, can occasionally induce dementia. This article compares and contrasts the cognitive and behavioral changes associated with Alzheimer’s disease and Parkinson’s disease.