The meaning of the word "vertigo"

OBJECTIVE. To determine whether otologists see a need to further define the word "vertigo" and assess the variety of meanings that are meant in using the word. METHODS: A questionnaire was mailed to 720 members of the American Otologic al Society (AOS) and American Neurotological Society (ANS) to assess the ne ed for further definition and the current understanding of the meaning of " vertigo." RESULTS: The response rate was 42%. Significant variability in the intended meaning of the word "vertigo" was found suggesting that the definition is inconsistent among experts. Three quarters of the respondents indicated tha t the word needs further definition. The word was most commonly used to ind icate sensations that include spinning or turning only. CONCLUSION. The definition of the term "vertigo" is inconsistent among otol aryngologists. Refinement of the definition is desirable for accurate histo ry taking and should be limited to false illusions of circular motion.