The most common causes of sudden deafness are：
- Infectious diseases like viruses (e.g., Lyme disease, bacterial meningitis)
- Trauma, particularly a head injury
- Autoimmune diseases, such as Cogan’s syndrome
- Ototoxic drugs (i.e., those that cause chemical damage to the inner ear that results in permanent or temporary hearing loss): Examples include platinum-based chemotherapy, aminoglycoside antibiotics, and even large doses of aspirin).
- Blood circulation problems
- Barotrauma, or a pressure imbalance between the inner and outer ear
- A tumor on the nerve that connects the ear to the brain
- Neurologic diseases and disorders, such as migraine and multiple sclerosis
- Disorders of the inner ear, such as Ménière’s disease
You need to consult an audiologist. At the same time, you need to have a hearing test, a cranial MRI, etc.. to confirm the diagnosis.
Given the large range of potential causes, treatment will largely depend on what your doctor finds from testing and examinations.
In cases of physical injury or barotrauma, the ear may heal on its own. Corticosteroids are the most common treatment for sudden deafness, as they reduce inflammation, decrease swelling, and help the body fight illness.
Additional treatments may be needed. For example, if your sudden deafness is caused by an infection, you may be prescribed antibiotics. If you have an autoimmune condition that causes your immune system to attack the inner ear, you may need to take drugs to suppress your immune system.
For cases where hearing is not fully restored, hearing aids may be an option. The key is seeing a doctor as soon as possible to find the best treatment.
At the same time, you also need to regularly monitor blood pressure and coagulation function to avoid cerebral hemorrhage.