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Merck Manual
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Neurologic Disorders
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Movement and Cerebellar Disorders
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Movement and Cerebellar Disorders
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Overview of Movement and Cerebellar Disorders
Classification
Hyperkinetic disorders
Chorea, Athetosis, and Hemiballismus
Dystonias
Classification
Primary generalized dystonia (
DYT1
dystonia)
Dopa-responsive dystonia
Focal dystonias
Segmental dystonias
Diagnosis
Treatment
Treatment references
Key Points
Cervical Dystonia
Symptoms and Signs
Symptoms and signs references
Diagnosis
Diagnosis references
Treatment
Medications
Surgery
Treatment references
Key Points
Fragile X–Associated Tremor/Ataxia Syndrome (FXTAS)
Symptoms and Signs
Diagnosis
Treatment
Treatment references
Key Points
Huntington Disease
General reference
Pathophysiology
Symptoms and Signs
Diagnosis
Diagnosis reference
Treatment
Treatment reference
Key Points
Myoclonus
Classification of myoclonus
Classification reference
Symptoms and Signs
Diagnosis
Treatment
Key Points
Parkinson Disease
General references
Pathophysiology
Etiology
Etiology reference
Symptoms and Signs
Diagnosis
Treatment
Levodopa
Amantadine
Dopamine agonists
Selective MAO-B inhibitors
Anticholinergic medications
Catechol
O
-methyltransferase (COMT) inhibitors
Surgery
High-intensity focused ultrasound (HIFU)
Physical measures
Caregiver and end-of-life issues
Treatment references
Key Points
Secondary and Atypical Parkinsonism
Etiology
Etiology reference
Symptoms and Signs
Diagnosis
Treatment
Treatment references
Key Points
Progressive Supranuclear Palsy (PSP)
Symptoms and Signs
Symptoms and signs references
Diagnosis
Diagnosis references
Treatment
Key Points
Tremor
Pathophysiology
Classification
Etiology
Physiologic tremor
Pathologic (nonphysiologic) tremor
Evaluation
History
Physical examination
Red flags
Interpretation of findings
Testing
Treatment
Physiologic tremors
Essential tremors
Cerebellar tremors
Parkinsonian tremors
Medication-refractory tremor
Functional (psychogenic) tremor
Treatment reference
Geriatrics Essentials
Key Points
Cerebellar Disorders
Etiology
Congenital malformations
Hereditary ataxias
Acquired conditions
Etiology references
Diagnosis
Treatment
Treatment reference