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Ontology Browser
Term:
Parent Terms Term With Siblings Child Terms
Abnormality of central motor conduction +   
Abnormality of coordination +   
Abnormality of extrapyramidal motor function +   
Alien limb phenomenon  
Apraxia +   
Athetosis +   
Cataplexy  
Cerebral palsy +   
Chorea +   
Clonus +   
crossed brainstem sign 
Hemiballismus  
Involuntary movements +   
Involuntary vocalization +   
Myoclonus +   
Paralysis +   
Paroxysmal dyskinesia  
Torticollis +   
Tremor +   
Upper motor neuron dysfunction +   
A functional anomaly of the upper motor neuron. The upper motor neurons are neurons of the primary motor cortex which project to the brainstem and spinal chord via the corticonuclear, corticobulbar and corticospinal (pyramidal) tracts. They are involved in control of voluntary movements. Dysfunction leads to weakness, impairment of fine motor movements, spasticity, hyperreflexia and abnormal pyramidal signs.

Synonyms
Exact Synonyms: Corticospinal tract dysfunction ;   Pyramidal tract dysfunction
Xrefs: UMLS:C1504405 ;   UMLS:C1839042
Definition Sources: https://orcid.org/0000-0002-0736-9199

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