Summary
Differentials
Common
- Parkinson disease
- Lewy body dementia
- Enhanced physiologic tremor
- Hypoglycemia (enhanced physiologic tremor)
- Thyrotoxicosis (enhanced physiologic tremor)
- Alcohol withdrawal (enhanced physiologic tremor)
- Essential tremor or essential tremor plus
- Drug-induced tremor
Uncommon
- Multiple system atrophy
- Progressive supranuclear palsy
- Cortical basal degeneration
- Toxin-induced tremor
- Postencephalitic parkinsonism
- Pheochromocytoma (enhanced physiologic tremor)
- Cerebellar tremor (multiple sclerosis, trauma, or stroke)
- Fragile X tremor ataxia syndrome (FXTAS)
- Orthostatic tremor
- Primary writing tremor
- Dystonic tremor
- Wilson disease
- Rubral tremor
- Functional (psychogenic) tremor
Contributors
Authors

Professor of Neurology and Neurosurgery
University of Michigan
Ann Arbor
MI
Disclosures
KLC serves on the medical advisory board for the International Essential Tremor Foundation and has received grants from Cavion. KLC receives royalties from UpToDate and Springer Publishing.

Associate Professor of Neurology
University of Michigan
Ann Arbor
MI
Disclosures
PD declares that he has no competing interests.
Peer reviewers
Chair
Department of Neurology
Co-Director of Parkinson's Disease & Movement Disorders Center
Pennsylvania Hospital
Frank and Gladys Elliott Professor of Neurology
University of Pennsylvania School of Medicine
Philadelphia
PA
Disclosures
HH declares that he has no competing interests.
Pediatric Neurologist
Kinderneurologisches Zentrum Mainz
Mainz
Germany
Disclosures
RW declares that he has no competing interests.
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