palatal myoclonus


Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.

myoclonus

 [mi″o-klo´nus]
shocklike contractions of part of a muscle, an entire muscle, or a group of muscles; usually a manifestation of a convulsive disorder. adj., adj myoclon´ic.
A single myoclonic arm or leg jerk is normal when the person is falling asleep. Myoclonic jerks are severe with grand mal seizures. From Jarvis, 1996.
palatal myoclonus a condition characterized by a rapid rhythmic movement of one or both sides of the palate.

palatal tremor

an involuntary, persistent, rapid regular tremor of the soft palate, face, and diaphragm related to lesions of the olivocerebellar pathway; two types are recognized: essential and symptomatic.
Synonym(s): palatal myoclonus

pal·a·tal my·o·clo·nus

(pal'ă-tăl mī-ok'lŏ-nŭs)
Tinnitus that may be elicited by contractions of the soft palate. It is classified as an extracochlear muscular somatosound.

myoclonus

repetitive, rhythmic contractions of a group of skeletal muscles, persisting in sleep. The result of encephalitis or myelitis caused by distemper virus in dogs. Called also canine chorea, flexor spasm and tremor syndrome.

familial reflex myoclonus
a familial disease seen in young Labrador retriever puppies; myoclonus is followed by a generalized extensor rigidity and opisthotonos.
inherited congenital myoclonus
inherited as a recessive trait in Polled Hereford cattle; at birth affected calves are unable to stand because of myoclonic jerks to skeletal muscles in response to external stimuli; affected calves are not viable. One of the diseases originally classified together as neuraxial edema.
palatal myoclonus
a condition characterized by a rapid rhythmic movement of one or both sides of the palate.