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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:Breakthrough pain
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Accession:HP:0032149 term browser browse the term
Definition:A episode of severe pain that breaks through (i.e., temporarily exacerbates) a period of persistent pain.

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Term Annotations click to browse term
  Human phenotype 0
    Phenotypic abnormality 0
      Constitutional symptom 0
        Pain 0
          Episodic pain 0
            Breakthrough pain 0
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