Age is a risk factor for essential tremor. ET is more common in people over the age of 60.

There is often a family history of the disorder and approximately 50 percent of cases have a genetic link. Essential tremor is an autosomal dominant trait that has been linked to gene ETM1 and gene ETM2. Having a parent with the disorder increases the risk.

The cause of essential tremor in people without the genetic mutation is unknown.

Publication Review By: Jean-Raphael Schneider, M.D.

Published: 01 Jan 2000

Last Modified: 14 Sep 2015