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Many people associate shaky hands with Parkinsonâs disease, but the most common cause of shaking hands is actually essential tremor. Essential tremor is the most common neurologic disorder affecting adults, but itâs not well understood.
Tremors, in general, can be caused by a variety of conditions like Parkinsonâs disease, overactive thyroid, alcoholism and stroke. These tremors are not characterized as essential tremor. The exact cause of essential tremor is unknown. Scientists have not found absolute genetic or environmental causes, and no cellular defect has been linked to the condition.