• Action Tremor: Occurs During Voluntary Muscle Movement
  • Cerebellar Disease (e.g., spinocerebellar ataxia, Vitamin E deficiency, stroke, multiple sclerosis)
• Resting Tremor: Occurs at Rest
  • Parkinson Disease
  • Midbrain Tremor
  • Wilson Disease
  • Progressive supranuclear palsy
  • Multiple System Atrophy
  • Drug-Induced Parkinsonism
• Postural Tremor: Occurs While Held Motionless Against Gravity
  • Enhanced Physiologic Change
  • Essential tremor
  • Dystonia
  • Metabolic Etiology (Thyroid, Liver, Kidney)
  • Drugs (Lithium, Amiodarone, Valproate)