Involuntary shock-like contractions, irregular in rhythm and amplitude, followed by relaxation, of a muscle or a group of muscles. This condition may be a feature of some CENTRAL NERVOUS SYSTEM DISEASES; (e.g., EPILEPSY, MYOCLONIC). Nocturnal myoclonus is the principal feature of the NOCTURNAL MYOCLONUS SYNDROME. (From Adams et al., Principles of Neurology, 6th ed, pp102-3).

Descriptor ID	D009207
MeSH Number(s)	C10.597.350.500 C23.888.592.350.500
Concept/Terms	Myoclonus Myoclonus Myoclonic Jerking Jerking, Myoclonic Myoclonic Jerk Jerk, Myoclonic Jerks, Myoclonic Myoclonic Jerks Myoclonus Simplex Myoclonus Simplex Simplex, Myoclonus Myoclonus, Action Myoclonus, Action Action Myoclonus Myoclonus, Eyelid Myoclonus, Eyelid Eyelid Myoclonus Myoclonus, Intention Myoclonus, Intention Intention Myoclonus Myoclonus, Upper Extremity Myoclonus, Upper Extremity Extremity Myoclonus, Upper Upper Extremity Myoclonus Polymyoclonus Polymyoclonus Myoclonus, Nocturnal Myoclonus, Nocturnal Nocturnal Myoclonus Myoclonus, Sleep Sleep Myoclonus Myoclonus, Oculopalatal Myoclonus, Oculopalatal Oculopalatal Myoclonus Myoclonus, Palatal Myoclonus, Palatal Palatal Myoclonus Myoclonus, Segmental Myoclonus, Segmental Segmental Myoclonus Myoclonus, Lower Extremity Myoclonus, Lower Extremity Extremity Myoclonus, Lower Lower Extremity Myoclonus

Below are MeSH descriptors whose meaning is more general than "Myoclonus".

Below are MeSH descriptors whose meaning is related to "Myoclonus".

Below are MeSH descriptors whose meaning is more specific than "Myoclonus".