Essential tremor is a neurological disorder that causes the
hands, head, trunk, voice, or legs to shake rhythmically. It is
often confused with Parkinson’s disease. The cause of essential
tremor is unknown, but for most people who have it, the
condition seems to run in their family. Facts about essential
tremor Essential tremor is the most common trembling disorder
people experience. In reality, everyone has some essential
tremor, but the movements usually cannot be seen or felt. When
they’re noticeable, the condition is classified as essential
tremor disorder. Essential tremor is most common among people
older than 65, but it can affect people at any age. Although the
cause isn’t known, one theory is that the cerebellum and certain
other parts of the brain are not communicating correctly in
people with essential tremor disorder. The cerebellum is a part
of the brain that controls muscle coordination. Types of
essential tremor There really is just one type of essential
tremor, but it can occur in different pe