Movement Disorders EC

Question 1

Sudden wild flailing of 1 arm +/- ipsilateral leg (Disorder, Lesion, and Common cause)

Answer 1

Hemiballism

Contralateral Subthalamic nuclei (lacunar stroke)

Question 2

Sudden jerky, purposeless movements (Disorder, Lesion, and Common cause)

Answer 2

Chorea

Basal ganglia (Huntington’s)

Question 3

Slowly writhing movements in fingers (Disorder, Lesion, and Common cause)

Answer 3

Athetosis

Basal ganglia (Huntington’s)

Question 4

Sudden, brief, uncontrolled muscle contraction (Disorder, Examples, and Common cause)

Answer 4

Myoclonus

Jerks, hiccups (metabolic abnormalities)

Question 5

Sustained involuntary muscle contraction (Disorder and Examples)

Answer 5

Dystonia

Writer’s cramp
Blepharospasm (sustained eyelid twitch)

Question 6

Action tremor exacerbated by holding posture/limb position (Disorder)

Answer 6

Essential tremor

Often self-medicate with alcohol
Treated with B-blockers or Primidone

Question 7

Uncontrolled movement of distal appendages. Tremor alleviated by intentional movement. (Disorder and Disease)

Answer 7

Resting tremor

Parkinson’s

Question 8

Slow zigzag motion when pointing/extending toward a target (Disorder and Cause)

Answer 8

Intention tremor

Cerebellar dysfunction