OBJECTIVES: We investigated symptoms of otologic diseases in patients with temporomandibular joint diseases. PATIENTS AND METHODS: The study included 44 patients (26 females, 18 males; mean age 36+/-10.7 years; range 21 to 58 years) with temporomandibular joint disease. A questionnaire was administered to the patients to inquire into otological symptoms accompanying temporomandibular joint disease. RESULTS: Temporomandibular joint disease was bilateral in 11 patients. Accompanying otological symptoms were as follows: click voice with jaw movements (n=21; 47.7%), headache (n=15; 34.1%), pain in the ear with jaw movements (n=14; 31.8%), tinnitus (n=8; 18.2%), fullness in the ear (n=6; 13.6%), vertigo or dizziness (n=6; 13.6%), and hearing loss (n=3; 6.8%). Pure-tone audiometry revealed sensorineural hearing loss in one patient, being 28 dB on the right and 30 dB on the left. CONCLUSION: Our findings suggest that otologic symptoms may accompany temporomandibular joint diseases, requiring that patients presenting with otologic symptoms must be investigated for temporomandibular joint diseases.