Which are the symptoms of Semicircular canal dehiscence syndrome?

Semicircular Canal Dehiscence Syndrome: Symptoms

Semicircular canal dehiscence syndrome (SCDS) is a rare medical condition that affects the inner ear, specifically the semicircular canals. These canals are responsible for detecting rotational movements of the head and maintaining balance. When a person has SCDS, there is a thinning or complete absence of the bone that normally covers the semicircular canals, leading to various symptoms.

1. Hearing Symptoms:

One of the primary symptoms of SCDS is hearing-related issues. Patients may experience a range of auditory symptoms, including:

• Autophony: This refers to the perception of hearing one's own voice or bodily sounds more loudly or resonantly than usual. Patients may describe their voice as being too loud or echoing in their head.


• Pulsatile Tinnitus: Patients may experience a rhythmic or pulsating sound in their ears, often synchronized with their heartbeat. This can be quite bothersome and affect daily activities.


• Hyperacusis: Individuals with SCDS may have increased sensitivity to certain sounds, making them seem excessively loud or uncomfortable.

2. Vestibular Symptoms:

The vestibular system, which is responsible for maintaining balance and spatial orientation, is also affected by SCDS. The following symptoms may be present:

• Dizziness: Patients may experience a sensation of spinning or unsteadiness, especially during head movements or positional changes.


• Vertigo: This is a specific type of dizziness characterized by a spinning or whirling sensation. It can be triggered by certain head movements or even by loud sounds.


• Oscillopsia: Some individuals with SCDS may perceive a visual disturbance where objects appear to bounce or vibrate when they move their head.

3. Cognitive Symptoms:

SCDS can also lead to cognitive symptoms that affect a person's mental functioning. These may include:

• Brain Fog: Patients may experience difficulty concentrating, memory problems, or a general feeling of mental fogginess.


• Anxiety and Depression: Living with the symptoms of SCDS can be challenging and may lead to increased levels of anxiety or depression.

4. Other Symptoms:

In addition to the primary symptoms mentioned above, SCDS can cause a variety of other symptoms that may vary from person to person. These can include:

• Headache: Some individuals may experience headaches, which can range from mild to severe.


• Ear Fullness: Patients may feel a sensation of fullness or pressure in the affected ear.


• Balance Problems: SCDS can lead to difficulties with balance and coordination, making it challenging to perform daily activities.


• Nausea and Vomiting: In severe cases, the vestibular symptoms associated with SCDS can cause nausea and vomiting.

If you suspect you may have SCDS or are experiencing any of the symptoms mentioned above, it is important to consult with a healthcare professional for an accurate diagnosis and appropriate treatment.