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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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  Human phenotype 14888
    Phenotypic abnormality 14885
      Constitutional symptom 1191
        Pain 783
          Episodic pain 38
            Breakthrough pain 0
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