Medical Definition of cervical dystonia
: an often painful condition characterized by involuntary contraction of the neck muscles that causes the head to tilt or turn sideways, forward, or backward or jerk abnormally Cervical dystonia … usually begins between the ages of 30 and 50 years, often with initial neck stiffness and restricted head mobility.—Daniel Tarsy and David K. Simon, The New England Journal of Medicine, 24 Aug. 2006 The doctors eventually told him the problem was cervical dystonia, which is a disorder caused by the lower part of the brain sending messages into the neck that cause the neck muscles to spasm …—John Feinstein, The Washington Post, 3 Apr. 2004—called also spasmodic torticollis
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