Parkinson's Parkinson's Complications and Comorbidities 1 — Questions and Answers
Question 1: Parkinson's disease dementia (PDD) typically develops:
- After at least one year of established motor symptoms (Correct answer)
- Before motor symptoms appear
- Simultaneously with motor symptoms
- Only in patients with LRRK2 mutations
Correct answer: After at least one year of established motor symptoms
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?
- Executive function and attention (Correct answer)
- Language
- Episodic memory
- Visuospatial skills
Correct answer: Executive function and attention
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:
- Neurochemical changes (dopamine, serotonin, norepinephrine deficits) from the disease itself (Correct answer)
- Psychological reaction to diagnosis only
- Medication side effects exclusively
- Social isolation only
Correct answer: Neurochemical changes (dopamine, serotonin, norepinephrine deficits) from the disease itself
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?
- As a side effect of dopaminergic medications or in advanced disease with Lewy body involvement (Correct answer)
- In early untreated disease only
- Exclusively in patients with dementia
- As a result of sleep deprivation alone
Correct answer: As a side effect of dopaminergic medications or in advanced disease with Lewy body involvement
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:
- Autonomic dysfunction and reduced facial movement affecting sebum regulation (Correct answer)
- Levodopa skin side effects
- Reduced bathing frequency
- Nutritional deficiency
Correct answer: Autonomic dysfunction and reduced facial movement affecting sebum regulation
Seborrheic dermatitis occurs more frequently in Parkinson's disease due to autonomic nervous system dysfunction affecting sebaceous gland activity, combined with reduced facial movement.
Question 6: Pain in Parkinson's disease is most commonly classified as which type?
- Musculoskeletal pain from rigidity and abnormal posture (Correct answer)
- Neuropathic burning pain
- Visceral abdominal pain
- Headache
Correct answer: Musculoskeletal pain from rigidity and abnormal posture
Musculoskeletal pain is the most common type of pain in Parkinson's disease, resulting from rigidity, abnormal posture, and reduced movement causing muscle and joint strain.
Parkinson's Parkinson's Complications and Comorbidities 1
Parkinson's disease dementia (PDD) typically develops: