1 First, try and keep your question as short as possible. 2  Include specific words that will help us identify questions that may already have your answer.  If you don't find your answer, you can post your question to WebMD Experts and Contributors.
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.
Essential Tremor. Essential tremor is a neurological disorder that causes the hands, head, trunk, voice, or legs to shake rhythmically. It is often confused with Parkinsonâs disease. The cause of essential tremor is unknown, but for most people who have it, the condition seems to run in their family.