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Essential tremor

Essential tremor is a condition where a part of a person’s body shakes or trembles uncontrollably when it is held up against gravity.
Symptoms of essential tremor
The only symptom of essential tremor is the characteristic shaking. About 9 out of 10 people experience a trembling, up-and-down movement of the hands.
Causes of essential tremor
Essential tremor may be caused by a change (mutation) in one of your genes. Genes are inherited units of information that determine how your body grows and functions.
Treating essential tremor
There is no cure for essential tremor so treatment aims to eliminate or reduce shaking. Lifestyle changes, medication or surgery can be used depending on the severity.