What is Superior Semicircular Dehiscence SSCD TEST?
Superior Semicircular Dehiscence syndrome or we call it canal dehiscence syndrome, is responsible for affecting the balance and hearing ability of a person. A person suffering from such an ailment has a hole or a very thin place in a bone present in the ear that regulates the balance of the body. The disruption in the bone of the inner ear may even affect the hearing ability of a person. Canal dehiscence syndrome or SSCD is not a very common condition and only 2% of the population experiences the same. Recent research states that every person suffering from SSCD does not experience symptoms and many people suffering from the same remains undiagnosed.
SSCD can affect anyone irrespective of age and gender, but it is mostly diagnosed in patients that lie under the age group of 40 years. SSCD can lead to a variety of inner ear problems starting from vertigo, aural fullness, autophony, conductive hearing loss, and fluctuating or progressive sensorineural hearing loss.
If past reports are to be checked, a majority of patients suffering from Superior Semicircular Dehiscence syndrome are misdiagnosed with Otosclerosis, patulous Eustachian tubes, middle ear perilymphatic fistulas, or Meniere’s disease. An opening in the bone that overlays the superior semicircular canal of the inner ear results in vestibular and auditory symptoms in a person suffering from SSCD. The symptoms of SSCD arise due to the thinning or hole in the bone in the inner ear. Patients suffering from SSCD may experience a number of symptoms starting from sudden vertigo spells and oscillopsia which is caused due to loud noises and due to activities that exert pressure in the middle ear like sneezing and coughing.
Once you start experiencing symptoms associated with superior semicircular canal dehiscence syndrome, it is recommended to seek medical help immediately. An expert neurologist will diagnose the condition closely and seek your complete medical history. He may ask you to undergo various clinical Superior Semicircular Dehiscence test to diagnose the accurate reason behind such an ailment. After understanding the reason behind SSCD he would suggest you with the right treatment for curing such an ailment or suggest you with vestibular rehabilitation therapy if required. If the case is severe he may even advise you undergoing surgery for repairing SSCD.
The surgical correction results in giving relief from vestibular and auditory symptoms. The function of the operated canal gets disrupted without affecting the functioning of other canals. Superior Semicircular Dehiscence syndrome is known by various other names apart from canal dehiscence syndrome. Third mobile window syndrome, Minor’s syndrome & SSCD are some of the common names that are commonly used to signify such a condition.
Common signs and symptoms of SSCD
If you are experiencing SSCD, you may experience symptoms like dizziness or vertigo which gets triggered due to inner ear pressure and autophony. Your doctor will ask you to undergo a DVA diagnosis test or SSCD Test if you are experiencing either of the SSCD symptoms or a combination of the symptoms listed below:
- Hearing loss
- Unsteadiness oscillopsia
- Sensitivity to sound
- Hear the echo of sounds of eating and talking known as autophony.
- Fullness in ears or inner ear pressure
- Hearing sounds louder than normal (own sound or internal sounds like a heartbeat).
- Movement of your eyes, known as nystagmus.
- Ringing in your ears
- A distorted sensation of sound in the affected ear during activities like running.
The symptoms of superior semicircular canal dehiscence get triggered due to coughing, sneezing, loud noises, lifting heavy weights, feeling pressure changes, strain, etc.
It is advised to consult an expert neurologist if you are experiencing a set of similar symptoms to get your condition diagnosed.
Diagnosis & treatment of superior semicircular canal dehiscence syndrome
Your neurologist will consider the three most important elements when he will ask you to undergo an SSCD test for diagnosing the condition.
- He will seek your complete medical history along with the history of symptoms that resembles SSCD symptoms.
- He may take your physiologic testing consistent with SSCD under consideration.
- He will suggest a CT scan to identify an anatomic deficiency of the SSCD.
After the diagnosis, many patients who are diagnosed with anatomic defects of SSCD experience no symptoms of SSCD at all. They may develop symptoms later in life without any warning signs. A person experiencing symptoms of SSCD is asked by the doctor to undergo physiologic testing.
Mild symptoms of SSCD are controlled by avoiding exposure to loud noise and changes in altitudes. If you are suffering from hearing loss due to SSCD your doctor will suggest you wear hearing aids. He may even suggest you with vestibular rehabilitation therapy after understanding the underlying cause of SSCD.
If symptoms are intense your doctor may even recommend middle cranial fossa approach surgery to repair the canal with soft fibrous tissue. The surgical correction helps in giving relief from auditory and vestibular symptoms.