Mental or Behavioral Dysfunction
confusion Audio
con·fu·sion [ kuhn-fyoo-zhuhn ]
Subclass of:
Neurobehavioral Manifestations
Etymology:
Latin contusio = a bruise; from contundere = to bruise
Definitions related to confusion:
  • A mental state characterized by a lack of clear and orderly thought and behavior.
    NCI Thesaurus
    U.S. National Cancer Institute, 2021
  • A mental state characterized by bewilderment, emotional disturbance, lack of clear thinking, and perceptual disorientation.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2021
  • A mental state in which one is not thinking clearly.
    NCI Dictionary of Cancer Terms
    U.S. National Cancer Institute, 2021
  • Disturbances of consciousness manifested by a disordered orientation in relation to time, place, or person.
    Sadock's Comprehensive Glossary of Psychiatry and Psychology
    BJ Sadock Titles Press, 2012
  • Impaired orientation to person, place or time.
    NICHD Pediatric Terminology
    U.S. National Cancer Institute, 2021
  • Lack of clarity and coherence of thought, perception, understanding, or action.
    Human Phenotype Ontology (HPO)
    The Human Phenotype Ontology Project, 2021
  • A disorder characterized by a lack of clear and orderly thought and behavior.
    Common Terminology Criteria for Adverse Events
    U.S. National Institutes of Health, 2021
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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.