Tremor
A tremor may occur in any part of the body. It is most commonly described as an involuntary (you have no control over it) rhythmic, shaking movement. It is the result of involuntary muscle contractions. For many people a tremor occurs in their hands, but it can also occur in the arms, head, trunk/torso, legs, and even the eyes and vocal cords. It may be the result of injury or trauma to the body, or in some cases caused by a degenerative disease such as Parkinson’s. Other times it may be completely benign and simply a one-off.