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Essential tremor is a condition that causes involuntary shaking. While it usually develops in middle age, it can start much earlier. Shari Finsilver was aware of her hands shaking as a child. When I was about 11 years old, I noticed in art class that I was never able to draw a straight line, she says.
Tremors are usually the product of problems in the part of the brain that control body muscles or particular areas such as the hands. The causes of tremors include neurological disorders or conditions such as multiple sclerosis, stroke, traumatic brain injury and neurodegenerative disorders that destroy parts of the brainstem or cerebellum.