What Causes Sudden Hearing Loss?

Your sudden hearing loss could stem from various causes, including viral infections, head trauma, or exposure to loud noises. It can also occur from certain medications or inner ear conditions like Meniere's disease. In some cases sudden hearing loss is idiopathic, meaning the cause cannot be identified. Because sudden hearing loss needs same day medical attention, it helps to understand the possible triggers.

Understanding Sudden Sensorineural Hearing Loss (SSHL)

A sudden sensorineural hearing loss (SSHL) occurs when you experience a rapid loss of hearing, typically within 72 hours, in one or both ears. This condition specifically affects your inner ear or auditory nerve, which are crucial components in how you process sound.

You might notice SSHL upon waking up or gradually throughout the day. Some people report a loud "pop" just before their hearing diminishes, while others describe a feeling of fullness in the ear. The hearing loss can range from mild to severe, and it is often accompanied by tinnitus (ringing in the ears) or dizziness.

If you suspect SSHL, see your GP or an emergency department the same day.

Common Medical Triggers and Risk Factors

While medical experts have not identified a single definitive cause of SSHL, several ear-specific factors can trigger sudden hearing loss.

You may be at higher risk if you have had a recent viral infection, head trauma, or an inner ear condition like Meniere's disease. Certain medications, exposure to extremely loud noise, or sudden changes in air pressure may also damage your inner ear structures.

Your age plays a role too, as SSHL occurs more frequently in adults between 40-60 years old. Recent research suggests that COVID-19 infection might trigger SSHL in some patients. In many cases, no specific cause is identified, and the hearing loss is classified as idiopathic.

Recognising Sudden Changes

With so many potential causes of sudden hearing loss, knowing what to look out for can help you take quick action. You might notice a sudden drop in hearing ability in one or both ears, often accompanied by a feeling of fullness or pressure. Some people report a "popping" sensation followed by muffled sounds, as if their ears are plugged.

Other changes can include tinnitus (ringing in the ears), dizziness, or balance problems. You may find yourself asking others to repeat themselves or struggling to hear phone conversations. If your hearing changes suddenly, see your GP or an emergency department the same day.

What to Do Straight Away

Because sudden hearing loss requires swift action, it helps to know what to do. You will need a comprehensive hearing test and medical evaluation to determine the cause.

Sudden hearing loss is a medical emergency. See your GP or an emergency department the same day, and your doctor will advise on any medical management. Follow the advice of your GP or ENT specialist and attend follow-up appointments.

Recovery and Long-Term Management

Once you have received initial treatment for sudden hearing loss, your recovery journey may span several weeks to months. During this time, you will need regular hearing tests to monitor your progress and adjust treatments as necessary.

Ask your GP or ENT specialist about any activities to avoid, and follow their advice.

Consider working with an audiologist who can help you manage any residual hearing loss through hearing aids or other assistive devices. They will also teach you communication strategies and coping mechanisms. Remember to maintain follow-up appointments with your healthcare provider to ensure your hearing stabilises and to address any lingering symptoms.

Protecting Your Hearing

Taking proactive steps to protect your hearing can help look after your overall ear health. You can minimise risk by using ear protection when exposed to loud noises, whether at work, concerts, or while operating machinery. Keep your audio devices at moderate volumes and follow the 60/60 rule: listen at 60% volume for no more than 60 minutes.

Regular check-ups with your GP can help monitor your general health, and it is worth seeing your GP promptly about ear infections.

Support Resources and Professional Care Options

Professional support networks play a vital role in managing sudden hearing loss. You will find numerous specialists who can assist with your condition, including ENT doctors, audiologists, and hearing rehabilitation experts. These professionals can create personalised care plans and recommend appropriate hearing devices.

Support groups, both online and in-person, connect you with others experiencing similar challenges. You will benefit from shared experiences, coping strategies, and emotional support. Many hospitals and hearing clinics offer counselling services to help you adjust to hearing changes.

For financial assistance, eligible pensioner concession card and DVA card holders may access services under the Australian Government Hearing Services Program; eligibility criteria apply. Conditions apply under the Australian Government Hearing Services Program. Check with your private health fund to see whether your extras cover contributes to the cost of hearing devices. Australian organisations such as Deafness Forum Australia and Hearing Australia also offer information and support.