Essential tremor is a nervous system disorder that causes rhythmic shaking.
Essential tremor most often affects the hands, though it may also affect the head, voice, arms, or legs. It’s not related to Parkinson’s disease.
Shaking occurs with simple tasks such as tying shoelaces, writing, or shaving.
People with this disorder may experience the following physical and psychological symptoms:
- Uncontrolled shaking occurs when trying to perform everyday tasks, may be aggravated by stress or fatigue.