[Room tilt illusion: a chief complaint need to be alert in otology clinic].

Objective:This study aims to investigated the clinical significance of room tilt illusionRTI in screening for central vertigo in otology clinic. Method:A retrospective study of 8 RTI cases out of 656 patients with dizziness and/or vertigo. The characteristics of the symptoms, signs, physical examination, and other examinations of RTI patients were analyzed. Result:1 in circlePatients with RTI complaints accounted for 1.2% of all patients with dizziness and/or vertigo in the same period. Of all 8 patients, 2 were with acute vestibular syndrome, 5 were with episodic vestibular syndrome, and one had no dizziness and/or vertigo attack. 2 in circleTwo was diagnosed with acute cerebellar infarction, and 3 was diagnosed with posterior circulation transient ischemic attacks, 2 were diagnosed with definite vestibular migraine, and one was unable to identify the cause. 3 in circleAll 8 patients had a sensation of environment tilting, which was episodicsingle or repeated, transientseconds to minutes, in the coronal plane, and with tilt angle 30-180 degrees . 4 in circleSeven patients had dizziness and/or vertigo for minutes to hours after a transient RTI, and one patient had no other symptoms after RTI. All patients had no decrease in vHIT gain, 6 patients had abnormal oculomotor function, and one patient had mild horizontal semicircular canal paresis. Conclusion:Patients with RTI complaints mainly had central dizziness and vertigo diseases, and once are found in otology clinic, should be alert to the possibility of suffering from central diseases.