muscle dysfunction characterized by spasms or abnormal muscle contraction. One form is a postural disorder often associated with disease of the basal ganglia in the brain. There may be spasm in the muscles of the face (see hemifacial spasm), shoulders, neck, trunk, and limbs; the arm is often held in a rotated position and the head may be drawn back and to one side. Other forms of dystonia include torticollis, blepharospasm, and writer's cramp. Dystonic conditions, including blepharospasm, may be helped by the injection of botulinum A toxin.
dystonic adj.

The new mediacal dictionary. 2014.

Look at other dictionaries:

  • dystonia — [dis tō′ne ə] n. a lack of normal muscle tone due to disease or infection of the nervous system dystonic [distän′ik] adj …   English World dictionary

  • Dystonia — Dystonias Classification and external resources A person with medication induced dystonia. ICD 10 G24.9 …   Wikipedia

  • Dystonia — Involuntary movements and prolonged muscle contraction, resulting in twisting body motions, tremor, and abnormal posture. These movements may involve the entire body, or only an isolated area. Symptoms may even be "task specific," such… …   Medical dictionary

  • dystonia — dystonic /dis ton ik/, adj. /dis toh nee euh/, n. Pathol. abnormal tone of any tissue. [DYS + TONIA] * * * ▪ pathology       movement disorder characterized by the involuntary and repetitive contraction of muscle groups, resulting in twisting… …   Universalium

  • dystonia — noun Etymology: New Latin Date: 1860 any of various conditions (as Parkinson s disease and torticollis) characterized by abnormalities of movement and muscle tone • dystonic adjective …   New Collegiate Dictionary

  • dystonia — noun A disabling neurological disorder in which prolonged and repetitive contractions of muscles cause jerking, twisting movements and abnormal postures of the body …   Wiktionary

  • dystonia — n. impairment of muscle tone …   English contemporary dictionary

  • dystonia — [dɪs təʊnɪə] noun Medicine a state of abnormal muscle tone resulting in muscular spasm and abnormal posture. Derivatives dystonic adjective …   English new terms dictionary

  • dystonia — dys·to·nia …   English syllables

  • dystonia — dys•to•ni•a [[t]dɪsˈtoʊ ni ə[/t]] n. pat a neurological disorder marked by strong involuntary muscle spasms that cause painful and disabling twisting of the body • Etymology: 1955–60 dys•ton•ic ˈtɒn ɪk adj …   From formal English to slang

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