dystonia

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dystonia

 [dis-to´ne-ah]
impairment of muscular tonus. adj., adj dyston´ic.
tardive dystonia a variant of tardive dyskinesia characterized by unusual posturing and movements.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

dys·to·ni·a

(dis-tō'nē-ă),
A syndrome of abnormal muscle contraction that produces repetitive involuntary twisting movements and abnormal posturing of the neck, trunk, face, and extremities.
[dys- + G. tonos, tension]
Farlex Partner Medical Dictionary © Farlex 2012

dystonia

(dĭs-tō′nē-ə)
n.
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.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

dystonia

Neurology Involuntary, often acute movement and prolonged contraction of one or more muscles, resulting in twisting body motions, tremor, and abnormal posture Etiology Inherited, ↑ during voluntary movement, nervousness, and emotional stress; dystonias may affect the extrapyramidal system–despite lack of demonstrable lesions, task specific–eg, writer's cramp or associated with medications–especially antipsychotics or disease–eg, a form of lung cancer Location Tongue, jaw, eyes, neck, trunk, extremities, occasionally the whole body Management Dopamine, sedatives–benzodiazepines–eg diazepam, anticholinergics–eg, trihexyphenidyl, benztropine–which cause dry mouth, mydriasis, urinary retention, and visual hallucinations; surgery. See Cranial dystonia, Dopa-responsive dystonia, Focal dystonia, Idiopathic torsion dystonia, Oromandibular dystonia, Segawa's dystonia, Torsion dystonia.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

dys·to·ni·a

(dis-tō'nē-ă)
A state of abnormal (either hypo- or hyper-) tonicity in any tissue, particularly skeletal muscle.
Synonym(s): torsion spasm.
[dys- + G. tonos, tension]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

dystonia

A group of muscle disorders featuring variable muscle tone, muscle spasms, abnormal posture or muscle contraction, or interference with normal movement. The dystonias include wry-neck (TORTICOLLIS), WRITER'S CRAMP, spasmodic closure of the eyelids (BLEPHAROSPASM) and involuntary grimacing and chewing movements (Meige syndrome). Dystonias may be of autosomal dominant or recessive or X-linked aetiology. Botulinum toxin treatment is effective in many cases.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

Dystonia

A movement disorder characterized by sustained muscle contractions that result in writhing or twisting movements and unsual body postures.
Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.

dys·to·ni·a

(dis-tō'nē-ă)
A syndrome of abnormal muscle contraction that produces repetitive involuntary twisting movements and abnormal posturing of the neck, trunk, face, and extremities.
[dys- + G. tonos, tension]
Medical Dictionary for the Dental Professions © Farlex 2012