Sensorineural asymmetry (asymmetric hearing loss)

What is asymmetric hearing loss?

When hearing loss affects both ears to different degrees, it is called asymmetric hearing loss. One ear is significantly worse than the other across multiple pitches, which shows up on a hearing test (audiogram) as a clear difference between the two ears.

Why does asymmetry need further investigation?

Asymmetry in hearing is often flagged as needing further medical investigation. In rare cases, it may indicate a benign growth on the auditory (hearing) nerve. Most people with asymmetry do not have this, but it is important to rule out.

When we find significant asymmetry, we report the findings to your medical practitioner with recommendations, including specialist referral where appropriate.

What are the symptoms?

• Difficulty hearing in noisy environments
• Sounds seeming overly loud or intolerable
• Trouble telling where sentences begin and end
• Ringing in the ears, particularly in one ear (unilateral tinnitus)
• Television volume set higher than usual
• Frequently asking people to repeat themselves
• Difficulty understanding phone calls on the poorer ear
• A sense of imbalance or ear fullness

How is it diagnosed and treated?

Diagnosis starts with a full hearing test, including a look at the ear canal and eardrum and a comparison of both ears. Medical review is then arranged where needed.

Despite the need for investigation, the hearing loss itself is treatable with appropriate hearing solutions, particularly when significant. We can trial options through a hearing aid assessment.

When should I see an audiologist or doctor?

Book a hearing test if you notice one ear hearing worse than the other, one-sided tinnitus, or ear fullness or imbalance that does not settle.