Every body movement, from raising a hand to smiling, involves a complex interaction between the central nervous system (brain and spinal cord), nerves, and muscles. Damage to or malfunction of any of these components may result in a movement disorder.
Different types of movement disorders can develop, depending on the nature and location of the damage or malfunction, as in the following:
Some movement disorders, such as hiccups, are temporary, usually causing little inconvenience. Others, such as Parkinson's disease, are serious and progressive, impairing the ability to speak, use the hands, walk, and maintain balance when standing.
Last full review/revision August 2007 by David Eidelberg, MD; Michael Pourfar, MD