![]() ![]() Children of a parent who has familial tremor have greater risk of inheriting the condition. About 50 percent of the cases of essential tremor are thought to be caused by a genetic risk factor (referred to as familial tremor). The exact cause of essential tremor is unknown. Studies show essential tremor is accompanied by a mild degeneration of the cerebellum, which is the part of your brain that controls movement. It can be mild and stay the same, or slowly get worse. It also may affect your head and voice and how you walk. Although the tremor can start at any age it most often initially appears during adolescence or in middle age (between ages 40 and 50). There are more than 20 types of tremor and some of the most common forms include the following:Įssential tremor- Essential tremor (previously also called benign essential tremor or familial tremor) is one of the most common movement disorders. Its key feature is a tremor in both hands and arms during action and when standing still. Tremor is most commonly classified by its appearance and cause or origin.
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