As viruses circulate more widely this time of year, most people focus on avoiding fever, coughs, and fatigue. But many don’t realize that viruses and hearing loss can be connected, as certain infections may damage hearing—sometimes temporarily, sometimes permanently. Staying hydrated, washing your hands often, getting good sleep, and keeping vaccinations up to date aren’t just good for your overall health; they also help protect your ears.
How Can Viruses Lead to Hearing Loss?
Scientists are still piecing together the exact reasons, but several well-documented pathways exist:
Middle-ear infections (otitis media)
Viruses from the nose or throat can travel through the Eustachian tube and infect the middle ear, causing fluid buildup and temporary or prolonged conductive hearing loss.
Inner-ear inflammation (labyrinthitis or vestibular neuritis)
Respiratory viruses (even a simple cold or flu) can trigger swelling in the delicate structures of the inner ear, affecting both hearing and balance.
Direct damage to the auditory nerve
Certain viruses can attack the nerve that carries auditory signals to the brain, leading to sensorineural hearing loss.
Immune-system overreaction
In some cases, the body’s immune system mistakenly attacks healthy cells in the inner ear, leading to autoimmune inner-ear disease.
Medication side effects (ototoxicity)
Some powerful antibiotics or antivirals used to treat severe infections can themselves harm the inner ear. Fortunately, hearing often recovers once discontinuing the use of the drug.
Congenital (present from birth) hearing loss
If a pregnant woman contracts certain viruses, they can go through the placenta and harm the baby’s developing auditory system.
Viruses Known to Affect Hearing
Acquired after birth (any age):
- Common cold viruses
- Influenza (flu)
- Measles
- Mumps
- Herpes simplex virus types 1 & 2 (HSV-1, HSV-2)
- Varicella-zoster virus (chickenpox and shingles)
- West Nile virus
- Zika virus
- HIV
Most common causes of congenital hearing loss (child infected during pregnancy):
- Cytomegalovirus (CMV) – the leading viral cause worldwide
- Lymphocytic choriomeningitis virus (LCMV)
- Rubella (German measles)
- Herpes simplex viruses
- HIV
HSV and HIV appear on both lists because they can affect hearing at any stage of life.
What to Do If Your Hearing Suddenly Changes After a Viral Illness
Sudden hearing loss, especially in one ear, is a medical emergency. Contact an audiologist or ENT doctor immediately, ideally within 72 hours. Prompt evaluation and treatment (often corticosteroids) can dramatically improve your chances of recovery. Never assume that it will get better on its own. While some viral-related hearing loss does resolve, waiting can turn a reversible problem into a permanent one. Taking the usual steps to avoid winter bugs this year does double duty: it keeps you breathing easier and helps safeguard one of your most precious senses – your hearing.