Parkinson's Parkinson's Complications and Comorbidities

Question 1

Parkinson's disease dementia (PDD) typically develops:

Accepted Answer

After at least one year of established motor symptoms

Answer

By convention, Parkinson's disease dementia is diagnosed when cognitive impairment occurs at least one year after established motor symptoms, distinguishing it from Dementia with Lewy Bodies.

Question 2

Which cognitive domain is most commonly impaired first in Parkinson's disease?

Accepted Answer

Executive function and attention

Answer

Executive function (planning, cognitive flexibility, working memory) and attention are typically the first cognitive domains to decline in Parkinson's disease due to frontostriatal pathway disruption.

Question 3

Depression in Parkinson's disease is believed to be primarily caused by:

Accepted Answer

Neurochemical changes (dopamine, serotonin, norepinephrine deficits) from the disease itself

Answer

Depression in Parkinson's is often a neurobiological feature of the disease due to degeneration of monoaminergic pathways (dopamine, serotonin, norepinephrine), not purely a reaction to having a chronic illness.

Question 4

Visual hallucinations in Parkinson's disease most commonly occur in which context?

Accepted Answer

As a side effect of dopaminergic medications or in advanced disease with Lewy body involvement

Answer

Visual hallucinations in Parkinson's occur due to dopaminergic medication overstimulation and/or Lewy body involvement of visual cortex pathways, particularly in those with cognitive impairment.

Question 5

Seborrheic dermatitis is more common in Parkinson's patients due to:

Accepted Answer

Autonomic dysfunction and reduced facial movement affecting sebum regulation

Answer

Seborrheic dermatitis occurs more frequently in Parkinson's disease due to autonomic nervous system dysfunction affecting sebaceous gland activity, combined with reduced facial movement.

Parkinson's Practice Test

Parkinson's Practice Test

Parkinson's Parkinson's Complications and Comorbidities