Mental or Behavioral Dysfunction
mood swing
mood swing
Definitions related to mood swings:
  • (emotional lability) Unstable emotional experiences and frequent mood changes; emotions that are easily aroused, intense, and/or disproportionate to events and circumstances.
    Human Phenotype Ontology (HPO)
    The Human Phenotype Ontology Project, 2025
  • Oscillation of a person�s emotional feeling tone between periods of elation and periods of depression.
    Sadock's Comprehensive Glossary of Psychiatry and Psychology
    BJ Sadock Titles Press, 2012
  • (mood lability) A condition of frequent mood changes associated with excessive emotional reactions.
    NCI
    U.S. National Cancer Institute, 2021
  • (emotional lability) Unstable emotional experiences and frequent mood changes; emotions that are easily aroused, intense, and/or disproportionate to events and circumstances.
    Human Phenotype Ontology (HPO)
    The Human Phenotype Ontology Project, 2025
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This content should not be used in place of medically-reviewed decision support reference material or professional medical advice. Some terms may have alternate or updated definitions not reflected in this set. The definitions on this page should not be considered complete or up to date.