Causes and Risk Factors
- About half of essential tremor cases result from an autosomal dominant disorder (familial tremor).
- Age: more common in people age 40 or older.
A nervous system (neurological) disorder that causes involuntary and rhythmic shaking. It can affect almost any part of your body, but the trembling occurs most often in your hands — especially when you do simple tasks, such as drinking from a glass or tying shoelaces.
Note that essential tremor and Parkinson’s disease (PD) are different in 3 key ways: