Send us a Message



Submit Data |  Help |  Video Tutorials |  News |  Publications |  Download |  REST API |  Citing RGD |  Contact   

HUMAN PHENOTYPE - ANNOTATIONS

The Human Phenotype Ontology (HPO) is downloaded weekly from http://compbio.charite.de/hudson/job/hpo/lastStableBuild/artifact/ontology/release/hp.obo. The file downloaded is considered the "last stable build" available for the ontology. For more about the HPO, view their website at http://www.human-phenotype-ontology.org/.

Term:Hemiballismus
go back to main search page
Accession:HP:0100248 term browser browse the term
Definition:Hemiballismus is a rare movement disorder that is caused primarily by damage to various areas in the basal ganglia. Hemiballismus is usually characterized by involuntary flinging motions of the extremities. The movements are often violent and have wide amplitudes of motion. They are continuous and random and can involve proximal and/or distal muscles on one side of the body, while some cases even include the facial muscles. The more a patient is active, the more the movements increase. With relaxation comes a decrease in movements.
Comment:Hemiballismus is a very rare movement disorder. It is five hundred times rarer than Parkinson disease. Its effects can sometimes be severe enough to prevent patients from being able to perform daily functions. It is usually associated with structural brain lesions but can occur with metabolic abnormalities. The symptoms can also decrease while the patient is asleep, unlike some movement disorders. Ballism refers to very large-amplitude choreic movements of the proximal parts of the limbs, causing flinging and flailing limb movements. Ballism is most frequently unilateral, in which case it is referred to as hemiballism
Synonyms:related_synonym: Ballismus
 xref: MESH:D020820;   SNOMEDCT_US:66637005;   UMLS:C0221169



show annotations for term's descendants           Sort by:
 

Term paths to the root
Path 1
Term Annotations click to browse term
  Human phenotype 0
    Phenotypic abnormality 0
      Abnormality of the nervous system 0
        Abnormal nervous system physiology 0
          Abnormal central motor function 0
            Involuntary movements 0
              Hemiballismus 0
Path 2
Term Annotations click to browse term
  Human phenotype 0
    Phenotypic abnormality 0
      Abnormality of the nervous system 0
        Abnormal nervous system morphology 0
          Morphological central nervous system abnormality 0
            Abnormality of brain morphology 0
              Abnormal forebrain morphology 0
                Abnormal cerebral morphology 0
                  Abnormal cerebral subcortex morphology 0
                    Abnormal basal ganglia morphology 0
                      Hemiballismus 0
paths to the root