Superior Semicircular Canal Dehiscence Syndrome
KA is a 32-year-old male with primary complaints of pulsatile tinnitus, noise-induced nystagmus, and autophony. He also reported that he became dizzy when exposed to loud sound, and when he strained during a bowel movement. The patient reported he could hear a 250-Hz tuning fork placed on his left lateral malleolus. Interestingly, the patient complained he could hear his eyes move, and further that the environment would move and he would become dizzy if he hummed loudly.
His past medical history was significant for anxiety, pulmonary embolism, morbid obesity, and hypercoagulability disorder. KA reported his medications were limited to Zoloft. A 10-point review of systems was conducted and was negative with the exception of the patient’s balance and hearing disorders. KA’s computed tomography (CT) scan showed that the superior semicircular canal (SSC) walls were thin, but intact. Despite the previous normal CT scan, it was felt that KA’s history and primary complaints were suggestive of Superior Semicircular Canal Dehiscence Syndrome (SSCDS).