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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.
Stress, anxiety or fatigue can result in postural tremors, though these tremors will go away when the stressor or fatigue is alleviated. However, brain damage can also be the reason for a hand tremor. A stroke or brain tumor, which can disrupt normal brain function, are also possible causes.