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Flashcards in Movements disroders Deck (33):
1

Movement disorders - types

1. athetosis 2. chorea 3, Dystonia 4. Essential tremor
5. Hmiballismus 6. intention tremor 7. Myoclonus
8. Resting tremor

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Athetosis - presentation

slow, writhing (snake-like) movements, especially seen in fingers

3

Athetosis - characteristic lesions

Basal ganglia (Huntington)

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Athetosis - especially seen in (area)

fingers

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Chorea - presentation / chorema means (as a world)

sudden, jerky purposeless movements
chorea --> dancing

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chorea - characteristic lesion

Basal ganglia (Huntington)

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dystonia - presentation

sustained involuntary muscle contraction

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dystonia - examples

Writer's cramp
blepharospam (sustained eyelid twitch)

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Essential tremor - presentation

high frequency tremor with sustained posture (eg outstretched arms), worsened with movement or when anxious

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Essential tremor - worsened when

with movement or when anxious

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Essential tremor - treatment

1. β-blockers (nonselective --> eg. propranolol)
2. primidone
3. patients often self medicate with EtOH

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Essential tremor IS OFTEN

familiar

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hemiballismus - presentation

sudden, wild flailing of 1 arm +/- ispilateral leg

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hemiballismus - characteristic lesion

contralateral subthalamic nucleus (eg. lacunar stroke)

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intention tremor - presentation

slow, zigzag motion when pointing extending toward a target

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intention tremor - characteristic lesion

cerebellar dysfunction

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Myoclonus - presentation

sudden brief uncontrolled muscle contraction
- hiccups are common

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Myoclonus - common in

metabolic abnormalities such as liver or renal failure

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Resting tremor - presentation

uncontrolled movement of distal appendages (most noticeable in hands) (pill rolling tremor)
tremor alleviated by intentional movement

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Resting tremor - alleviated by

intentional movement

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Resting tremor - seen in

Parkinson

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Huntington - types of movement disorders

1. athetosis
2. chorea

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essential vs intention tremor (speed)

essential - high frequency
intention --> slow

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pill rolling tremor

Resting tremor

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essential vs resting (on movement)

essential --> worsened on movement (and resting --> alleviated by intentional movement

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familiar movement disorder

essential tremor

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movement disorder with cerebellar dysfunction

intention tremor

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movement disorder with hiccups

myoclonus

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movement disorder - patients often self mediated with EtOH

essential tremor

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movement disorder - writer's cramp

dystonia

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Hemiballismus course - course

Recovers spontaneously over months

32

2 causes of chorea

1. Huntington
2. Sydenham chorea

33

Asterixis?

Jerking of outstretched hands, worse with wrist extended (incoordination between flexors and extensors)