Classification of Dementia
Presence of motor symptoms
- Hypo- or hyperkinetic
- Dysarthria
Slow motor speed and information processing
Impaired planning and problem solving
Depression, apathy, withdrawal
No aphasia, apraxia, agnosia
Basal ganglia, mesencephalon, thalamus affected
Examples: Parkinson’s disease; Huntington’s disease
No motor symptoms (early)
Processing speed normal (early)
Amnesia, aphasia, apraxia, agnosia
Behavior can be odd or unusual (FLD or later in AD)
Involvement of basal forebrain, hippocampus and cortex
Examples: Alzheimer’s disease; Pick’s disease; Lewy Body dementia