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.
Back to Top Causes. Tremors occur when there is a problem with the nerves supplying certain muscles. They may affect the whole body or just certain areas, such as your hand. Familial tremor is a lot like essential tremor, except that the shaking affects more than one person in a family.