hypertonia

(redirected from Muscle rigidity)
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hypertonia

[‚hī·pər′tō·nē·ə]
(medicine)
Abnormal increase in muscle tonicity.
References in periodicals archive ?
Sudden discontinuation of L-Dopa, which has a short half-life, can cause muscle rigidity, difficulty in spontaneous respiration, and requirement of mechanical ventilation (1).
1) However, fever and muscle rigidity are the most recognized signs in various studies.
NMS was diagnosed based on the presence of three defining symptoms: fever, muscle rigidity, and elevated CK.
Typical Parkinson's disease therapy consists of drugs that stimulate dopamine to treat patients' motor symptoms, such as tremor, muscle rigidity and difficulty with walking.
Parkinson's disease (PD) is commonly known as a movement disorder that leads to tremors and muscle rigidity.
The DSM-IV-text revision requires both severe muscle rigidity and elevated temperature to be present after recent administration of antipsychotics as well as two associated signs, symptoms or lab findings not better accounted for by a substance-induced, neurological or general medical condition.
On examination, it displayed bilateral exaggeration of the pelvic limb reflexes with extensor muscle rigidity, intact superficial pain response, and positive withdrawal reflexes.
The diagnostic criteria for neuroleptic malignant syndrome (NMS) provided in the fourth edition of the American Psychiatric Association Diagnostic and Statistical Manual of Mental Disorders (DSM-IV)[21 specify that the individual must exhibit severe muscle rigidity and elevated temperature associated with the use of antipsychotic medication and have at least two of the following associated symptoms: (a) diaphoresis, (b) dysphagia, (c) tremor, (d) incontinence, (e) changes in level of consciousness ranging from confusion to coma, (f) mutism, (g) tachycardia, (h) elevated or labile blood pressure, (i) leukocytosis, or (j) laboratory evidence of muscle injury (e.
It is characterized by high fever, extreme muscle rigidity, autonomic instability, altered consciousness, acute renal failure and a disseminated intravascular coagulation.
It is characterized by hyperthermia, muscle rigidity, an elevated creatine kinase level and autonomic instability.
As noted, decreased GAD activity reduces GABA levels and raises levels of glutamate, a disequilibrium that causes muscle rigidity.