Early treatment of hypertension and vascular disease may prevent further progression. With Delirium, With Delusions, With Depressed Mood, and Uncomplicated. No subtyping based on age of onset is used. The dementia associated with Parkinson's disease has an insidious onset and slow progression and is characterized by cognitive and motoric slowing, executive dysfunction, and impairment in memory retrieval. Parkinson's disease is important to psychiatrists because of the high prevalence of associated depression and the frequent occurrence of psychotic symptoms during pharmacologic treatment of the primary motor deficit.
Patients are notably sensitive to extrapyramidal effects of antipsychotic medications.
Histopathologically, it is marked by the presence of Lewy inclusion bodies in the cerebral cortex. The disorder is particularly likely to come to psychiatric attention because of the patients' prominent psychotic symptoms and sensitivity to antipsychotic medications. Dementia due to Pick's disease and other frontal lobe dementias Pick's disease and other frontal lobe dementias are characterized in their early stages by changes in personality, executive dysfunction, deterioration of social skills, emotional blunting, behavioral disinhibition, and prominent language abnormalities. Difficulties with memory, apraxia, and other features of dementia usually follow later in the course. As the dementia progresses, it may be accompanied by either apathy or extreme agitation.