myoclonus

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Related to Myoclonic jerk: Hypnic jerk

myoclonus

[mī′äk·lə·nəs]
(medicine)
Clonic muscle spasm.
Any disorder characterized by scattered, irregular, arrhythmic muscle spasms.
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The development of myoclonic jerks was related to an abnormally high bilirubin level.
0[degrees]C and [greater than or equal to] 2 of the following: irritability/pain, rash, diarrhea, tachycardia, tachypnea, encephalitis, myoclonic jerks, or hepatitis.
Symmetrical myoclonic jerks and sudden loss of muscle tonus afterwards are called myoclonic-astatic seizures.
In September 2006, after three episodes of transient loss of consciousness, falls and myoclonic jerks of his legs he had been taken to hospital.
At the other extreme are idiopathic generalized epilepsies with variable phenotypes--the most common being juvenile myoclonic epilepsy (JME)--which contribute to 5%-11% of all epilepsies and are characterized by myoclonic jerks, generalized tonic-clonic seizures (GTCSs), and absence seizures with normal cognition (Commission on Classification and Terminology of the International League Against Epilepsy, 1989; Panayiotopoulos, Tahan, & Obeid, 1991).
Over the years Anna has suffered myoclonic jerks, which caused her right arm to jerk up on its own, and absent seizures, periods which were similar to day dreaming.
It is characterized by myoclonic jerks that occur in 100% of patients, with many also experiencing generalized tonic-clonic and absence seizures(2,3).