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There are several different types of tremor, including essential tremor, drug-induced tremor, Parkinson's tremor, and tremor due to other conditions such as neuropathy (nerve pain), stroke, liver failure, multiple sclerosis, and high levels of thyroid hormone.
Essential tremor is characterised by shaking when movement starts, which can continue or worsen during movement. The symptoms of Parkinsonâs disease include involuntary tremor when you are not moving, muscle stiffness, slowness of movement and âfreezingâ. Parkinsonâs disease is caused by a lack of supply of the brain chemical dopamine, which is necessary for smooth and controlled muscular movement.