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The Human Phenotype Ontology (HPO) is downloaded weekly from The file downloaded is considered the "last stable build" available for the ontology. For more about the HPO, view their website at

Term:Muscle spasm
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Accession:HP:0003394 term browser browse the term
Definition:Sudden and involuntary contractions of one or more muscles.
Synonyms:exact_synonym: Muscle cramps
 alt_id: HP:0009018;   HP:0031988
 xref: MSH:D009120;   SNOMEDCT_US:55300003;   UMLS:C0026821

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Term paths to the root
Path 1
Term Annotations click to browse term
  Human phenotype 0
    Phenotypic abnormality 0
      Abnormality of the musculoskeletal system 0
        Abnormality of the musculature 0
          Abnormal muscle physiology 0
            Muscle spasm 0
              Cold-induced muscle cramps + 0
              Exercise-induced muscle cramps + 0
              Intermittent painful muscle spasms 0
              Perioral spasm 0
paths to the root