dystonia

[dis-toh-nee-uh]
noun Pathology.
abnormal tone of any tissue.

Origin:
dys- + -tonia

dystonic [dis-ton-ik] , adjective
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World English Dictionary
dystonia (dɪsˈtəʊnɪə)
 
n
a neurological disorder, caused by disease of the basal ganglia, in which the muscles of the trunk, shoulders, and neck go into spasm, so that the head and limbs are held in unnatural positions
 
[from dys- + -tonia from Greek tonos tension, from teinen to stretch]

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American Heritage
Medical Dictionary

dystonia dys·to·ni·a (dĭs-tō'nē-ə)
n.
Abnormal tonicity of tissue.


dys·ton'ic (-tŏn'ĭk) adj.
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Example sentences
Drugs such as phenothiazines and other antipsychotic medications, can cause a side effect called acute dystonic reaction.
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