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Excessive and usually uncontrollable muscle movement.



excessive, violent, involuntary movements that occur in cases of organic and functional disturbances of the nervous system. Hyperkinesia usually accompanies disturbances of the cerebral cortex, subcortical motor centers, or truncal part of the brain. Types of hyperkinesia include athetosis, chorea, Parkinson’s disease, and myoclonia (brief jerking of a muscle or muscle bundle with a lightning-fast pace of contraction).

References in periodicals archive ?
First reported in 1982 by Koufman and Blalock, (9) muscle tension dysphonia characterized by altered laryngeal biomechanics has since been referred to by different terms, including functional dysphonia, hyper-functional dysphonia, and hyperkinetic dysphonia.
Bipolar electrical stimulation (100-130 Hz, 1-3 mA, 130 usec, up to 3.5 mA) further suppressed HH, and the hyperkinetic movements became grossly undetectable after 7 days of external stimulation.
Children with ODD were more likely to have schooling problems and inappropriate behaviors while children with Hyperkinetic Disorders were more likely to have socialization difficulties (P value less than .05).
Interestingly, reduction in stride length, which is considered as a hypokinetic feature, can be found at later ages, showing that gait follows the hyperkinetic and hypokinetic course of the disease in HD [7].
The aetiology of attention-deficit/hyperactivity disorder (ADHD) and hyperkinetic disorder (HKD), a severe form of ADHD, is not well understood but genetic and environmental factors are thought to contribute.
Acetaminophen use during pregnancy, behavioral problems, and hyperkinetic disorders.
Major finding: Children exposed prenatally to acetaminophen were at a greater risk of being diagnosed with hyperkinetic disorder, having ADHD-like behaviors, or being on an ADHD medication, an association that was increased with exposure during more than one trimester and with more weeks of exposure.
At age 11, researchers analysed prevalence of hyperkinetic disorder among the children.
European clinical guidelines for hyperkinetic disorder --first upgrade.
Dopamine receptor blocking agents (neuroleptics) are effective drugs for hyperkinetic movement disorders (1,2).
AoSherlock HolmesAo enacts the strange new rites of hyperkinetic action and impossible CGI, and Holmes and Watson do their best to upgrade themselves.
The aim was to establish patterns of service use among looked after children with behavioural problems (conduct disorders) and to explore whether contacts with different agencies were associated with other types of concurrent disorders, namely emotional and hyperkinetic.