Sudden Hearing Loss in One Ear: Causes and What to Do
Waking up one morning and realizing you can’t hear out of one ear can be unsettling. Sudden hearing loss in one ear is a condition that requires immediate attention, as it could point to an underlying issue. While it may seem alarming, understanding the potential causes can help you take the right steps toward diagnosis and treatment.
Understanding Sensorineural Hearing Loss
Sensorineural (sen-suh-ree-NUR-uhl) hearing loss, also known as SNHL, occurs because of damage to your inner ear. It can happen suddenly due to an illness, injury or exposure to loud noise, like an explosion. Alternatively, SNHL can develop gradually over time as part of the aging process. And in some cases, people are born with it.
SNHL has a significant impact on your hearing ability. You may not be able to hear soft sounds, and even loud noises may seem muffled. That’s because tiny receptors in your inner ear called hair cells are damaged. These hair cells are responsible for converting sound waves into signals that your brain interprets as sound.
Unfortunately, these cells can’t repair themselves, making SNHL a permanent condition in most cases. But wearing hearing aids or other hearing devices can greatly improve your hearing and quality of life.
Types of Sensorineural Hearing Loss
There are a few different types of sensorineural hearing loss:
- Unilateral sensorineural hearing loss affects one ear.
- Bilateral sensorineural hearing loss affects both ears.
- Asymmetrical sensorineural hearing loss affects both ears, but hearing loss is worse in one ear.
- Sudden sensorineural hearing loss is a medical emergency that happens within 72 hours of an injury, illness or exposure to loud noise (like fireworks or gunshots).
How Common is Sensorineural Hearing Loss?
Sensorineural hearing loss, particularly the age-related variant, is one of the most common types of hearing loss in adults.
Common Causes of Sudden Hearing Loss in One Ear
1. Sudden Sensorineural Hearing Loss (SSHL)
Sudden sensorineural hearing loss, also known as sudden deafness, is a condition where hearing in one ear declines rapidly - often over hours or days.
What to Do: Seek medical attention immediately.
2. Earwax Buildup
While earwax buildup is a common issue, a sudden blockage can lead to temporary hearing loss in one ear.
Symptoms: Hearing may feel muffled or as if you’re wearing an earplug.
What to Do: Avoid using cotton swabs, which can push the wax further in.
3. Ear Infections
Middle ear infections (otitis media) or outer ear infections (otitis externa) can cause sudden hearing loss in one ear.
What to Do: Most ear infections can be treated with medications like antibiotics or ear drops.
4. Head Injuries or Trauma
Head injuries or direct trauma to the ear can result in sudden hearing loss in one ear.
What to Do: If you experience hearing loss following an injury, seek immediate medical care.
5. Ménière’s Disease
Ménière’s disease is a chronic condition that affects the inner ear and can lead to sudden hearing loss in one ear.
6. Acoustic Neuroma
An acoustic neuroma is a benign tumor that develops on the auditory nerve, which connects the inner ear to the brain.
Symptoms: Hearing loss, ringing in the ear, and balance issues are common.
What to Do: Diagnosis typically involves imaging tests like an MRI.
7. Barotrauma
Rapid changes in air pressure, such as during air travel or scuba diving, can result in barotrauma.
What to Do: Try yawning, swallowing, or using decongestants to relieve pressure.
8. Medications
Certain medications can damage the structures of the inner ear, leading to hearing loss.
What to Do: If you notice sudden hearing loss while taking a new medication, speak to your doctor immediately.
The Importance of Immediate Action
Sudden hearing loss in one ear is a medical emergency. The sooner you seek treatment, the better your chances of restoring your hearing.
| Cause | Symptoms | What to Do |
|---|---|---|
| Sudden Sensorineural Hearing Loss (SSHL) | Rapid decline in hearing over hours or days | Seek medical attention immediately |
| Earwax Buildup | Muffled hearing, feeling of earplug | Avoid cotton swabs |
| Ear Infections | Ear pain, hearing loss | Medications like antibiotics or ear drops |
| Head Injuries or Trauma | Hearing loss after injury | Seek immediate medical care |
| Acoustic Neuroma | Hearing loss, ringing in the ear, balance issues | Imaging tests like an MRI |
| Barotrauma | Ear pain or pressure after changes in air pressure | Yawning, swallowing, or using decongestants |
| Medications | Hearing loss while taking a new medication | Speak to your doctor immediately |