Otosclerosis Symptoms & Diagnosis

Symptoms

Gradual hearing loss is the main symptom of otosclerosis. Hearing loss may be of two types:

• Conductive—involving the small bones of the inner ear
• Sensorineural—involving the following structures:
  • Cochlea—the sensory organ in the inner ear
  • The major nerve pathway (8th cranial nerve) and/or area of the brain responsible for hearing

Early in the disease, you may first notice trouble hearing low-pitched sounds or whispers. Other symptoms may include:

• Dizziness
• Balance problems
• Tinnitus or sensation of ringing, roaring, or buzzing in the ear

Diagnosis

The doctor will ask about your symptoms and medical history, and perform a physical exam. Tests may include:

• Hearing tests by an audiologist
• CT scan —a type of x-ray that uses a computer to make pictures of the inside of the ear and head
• Examination of the middle ear at the time of surgery