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Abnormal tonicity of muscle, characterized by prolonged, repetitive muscle contractions that may cause twisting or jerking movements of the body or a body part.

dys·ton′ic (-tŏn′ĭk) adj.


(Pathology) med relating to or affected by dystonia
References in periodicals archive ?
But Pablo just knows when I'm having a rough day or when I'm about to have a dystonic storm [similar to fit] and he sits by my side.
Now aged eight, he needs round-the-clock care and will do for the rest of his life due to him suffering from quadriplegic dystonic cerebral palsy, a hearing impairment and developmental delay.
ENTERTAINMENT Alan Titchmarsh helps transform the home and lawn of the Seesurrun family from London, whose young son Aryan, nine, has dystonic quadriplegic cerebral palsy.
Clinical signs of CWD in hamsters began with lethargy and, upon arousal, retrocollis; as the disease progressed, lethargy declined with increased dystonic movement including ataxia and tremors.
Background: Paroxysmal kinesigenic dyskinesia (PKD) is a rare movement disorder characterized by recurrent dystonic or choreoathetoid attacks triggered by sudden voluntary movements.
Atypical antipsychotics; risperidone, olanzapine, and a typical antipsychotic, thioridazine, led to acute dystonic reactions (ADRs) in our patients.
The last two decades have witnessed a renaissance of functional stereotactic neurosurgery in the treatment of diseases in the movement, such Parkinson's disease, essential tremor, pure dystonia and dystonic and dyskinetic syndromes (DDS).
Imaging also excludes differential diagnoses, such Wilson's disease--a dystonic condition treatable with medication rather than surgery.
Deep brain stimulation suppresses pallidal low frequency activity in patients with phasic dystonic movements.
Occasionally, dystonic posturing maybe observed and respiratory muscle weakness maybe the first clue to the onset of this syndrome.
The most commonly reported manifestations of CM include dystonic posture, grunting, rocking, facial flushing and sweating, friction of thighs, and pressure on the perineum.