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Movement Disorders MCQs
Neurology · MBBS / Medicine · 26 practice questions
- Chorea Etiology
- Tremor Types
- Hemiballismus
- Tremor Classification
- Dystonia & Athetosis
- Intention Tremor
- Movement Disorders Overview
- Dystonic Tremor
1. A researcher is mapping the pathways implicated in basal ganglia dysfunction. She traces a loop that begins in the caudate and putamen, projects to the external segment of the globus pallidus, then to the subthalamic nucleus, and finally to the internal segment of the globus pallidus. Which loop has she traced?
- AStriatopallidal loop
- BCorticocortical loop
- CNigrostriatal loop
- DThalamocortical loop
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A. Striatopallidal loop The striatopallidal loop projects from the caudate and putamen to the external globus pallidus, then subthalamic nucleus, then internal globus pallidus, as described in the text.
2. An elderly man presents with a 4-6 Hz tremor of the hand that appears as rhythmic opposing circular movements of the thumb and index finger, present at rest and diminishing with voluntary movement. Which additional clinical features would most support a diagnosis of parkinsonism as the cause, according to the text?
- ACerebellar ataxia and nystagmus
- BFasciculations and muscle wasting
- CRigidity and hypokinesia
- DHyperreflexia and clonus
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C. Rigidity and hypokinesia The text states the rate of tremor, its relationship to activity, and the presence of rigidity or hypokinesia distinguish parkinsonian rest tremor from other tremors.
3. A 30-year-old woman with bipolar disorder on long-term mood stabilizer therapy develops a fine tremor of the outstretched hands. Which of the following medications is most likely responsible?
- ABaclofen
- BLithium
- CLevodopa
- DHaloperidol
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B. Lithium The text lists lithium among drugs (along with tricyclic antidepressants, sodium valproate, and bronchodilators) that can enhance physiologic tremor.
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