Scientists have long known that the workings of the inner ear are important to your overall health.\nIn fact, problems with the inner ear can lead to balance, hearing, and sight problems. Superior canal dehiscence syndrome (SCDS) is one such disorder of the inner ear with many harmful symptoms that can impact your broader health.\nThough rare, SCDS can lead to serious consequences. And it’s important to understand the warning signs and treatment options.\nWhat Is Superior Canal Dehiscence?\nYour inner ear is made up of a system of passages and canals.\nWithin that system, two “window” openings are responsible for moving sound and air pressure in your ear. SCDS (sometimes called superior semicircular canal dehiscence) begins when a third window is created and redirects the pressure in this inner ear system.\nThis window forms when the bony covering of the semicircular canal (near the top of the ear) doesn’t exist or is too thin. Without that covering, the\u00a0extra opening leads to balance, vision, and hearing problems.\nDoctors don’t know for sure what causes the defect in the covering, but theories include failure to fully form in utero, thinning of the bone as part of aging, and head trauma.\nSuperior Canal Dehiscence Symptoms\nMost symptoms of SCDS are either vestibular (balance-related) problems or auditory (hearing) problems.\nVestibular symptoms of superior canal dehiscence\n\nChronic unsteadiness\nVertigo or involuntary eye movement (nystagmus) caused by loud sounds or pressure\nOscillopsia (objects in visual field appear to move rapidly) caused by loud sounds or pressure\n\nAuditory symptoms of superior canal dehiscence\n\nTinnitus (ringing, buzzing, or roaring sound in the ear)\nAutophony (hearing internal body sounds more loudly, like creaking joints, pulse, and breathing)\nLow-frequency conductive hearing loss\nIncreased sensitivity to bone-conducted sounds\nFeeling of fullness in the ear\n\nOther symptoms of superior canal dehiscence\n\nHeadache and\/or migraines\nNausea (usually caused by vertigo or nystagmus)\nTiredness and\/or brain fog\n\nHow Does This Differ from Other Inner Ear Issues, like Meniere’s Disease?\nMeniere’s disease is a more common inner ear disorder with symptoms that overlap with SCDS. Meniere’s usually develops as people age and can lead to hearing loss, vertigo, and tinnitus. However, Meniere’s is the result of fluid buildup in the inner ear that creates extra pressure and affects balance. A CT scan can separate SCDS from Meniere’s by detecting the third opening in the inner ear typical of SCDS.\nSuperior Canal Dehiscence Treatment\nIf you have SCDS, you should consult with an audiologist and an otolaryngologist.\n\nSurgical options can repair the covering of the superior canal, which often requires removing part of the skull, although less-invasive techniques are in development.\nHearing aids are also an option for people with SCDS, although they do not help symptoms other than hearing loss.\nIn some cases, simply avoiding situations that induce symptoms (like places with a lot of loud noises) can help manage discomfort.\n\nFor more, visit the Ear, Nose, and Throat specialists at UPMC.