Can Vertebral Artery Insufficiency Cause Hearing Loss?

Yes, vertebral artery disease is a rare but important possible cause of sudden hearing loss and tinnitus, particularly when accompanied by acute vertigo or dizziness. ^[1] The vertebral arteries merge to form the basilar artery, which supplies blood to the back of the brain (the posterior circulation). This includes the brainstem and the inner ear. ^[1] While a reduction in this blood flow can cause abrupt ear symptoms, vertebral artery insufficiency is an uncommon explanation for most ear issues. ^[2] Gradual tinnitus or a general sense of “ear pressure” without other symptoms is rarely caused by vascular issues alone. ^[3]

What to Do Now

• Go to the emergency room or call 911 if you experience sudden hearing loss or dizziness along with any of the following: difficulty walking or standing, severe and continuous vertigo, double vision, slurred speech, facial droop, weakness or numbness in your arms or legs, or a new, severe headache or neck pain. ^[4][5]
• Seek prompt medical care (within a few days) for any sudden hearing loss, even if it is only in one ear and you have no other symptoms. ^[6] Time is critical because if it is a common inner-ear condition called idiopathic sudden sensorineural hearing loss, treatments like steroids are most effective when started within two weeks. ^[6] Do not drive yourself if you feel dizzy or off-balance.

How Vascular Issues Affect the Ear

The inner ear is highly sensitive to a lack of oxygen. It receives its blood supply from the labyrinthine artery. This artery has a variable origin but often branches from the anterior inferior cerebellar artery (AICA), which in turn arises from the basilar artery. ^[7][1]

If a blockage or severe drop in blood flow (ischemia) occurs in this pathway, it can damage the delicate structures of the inner ear or the central nerve pathways in the brainstem. ^[1][8] When this happens, it can produce a combination of abrupt, severe vertigo and sudden sensorineural hearing loss (inner-ear or nerve-related hearing loss). ^[1][2]

Sudden vs. Gradual Symptoms

Because the ear is affected by many nonvascular conditions—such as earwax, middle-ear infections, noise injury, or vestibular migraine—it is important to distinguish potential vascular warning signs from other common ear problems: ^[9][6][10]

• Sudden Hearing Loss with Vertigo: This combination may signal posterior-circulation ischemia or a stroke (particularly an AICA-territory stroke) and requires urgent assessment. ^[4][1] Concern for a stroke is higher if you also have multiple vascular risk factors, or if the hearing loss is bilateral (both ears) or severe. ^[4]
• Tinnitus (Ringing in the Ears): Gradual, non-pulsing tinnitus is typically related to age or noise exposure. ^[3] However, a new tinnitus that pulses in time with your heartbeat (pulsatile tinnitus), or tinnitus that starts suddenly alongside neck pain, severe headache, or dizziness, can be a red flag for a torn artery (arterial dissection) or other urgent vascular issues. ^[11][12]
• Ear Pressure (Aural Fullness): Feelings of ear pressure are not specific to vascular problems. ^[3] These symptoms are much more common in nonvascular disorders like Ménière’s disease. Ménière’s disease generally involves recurrent, spontaneous episodes of vertigo (lasting 20 minutes to 12 hours) with documented fluctuating hearing loss. ^[13][3]

What to Expect During Evaluation

If you experience sudden hearing loss or sudden, severe vertigo, your care team should evaluate you to distinguish between a common inner-ear problem and a vascular event. ^[6][11]

• Neurologic Examination: Clinicians trained in neuro-otology may perform bedside eye-movement tests (such as the HINTS exam) to help evaluate continuous vertigo. ^[14][15] However, HINTS is not a home test and must be interpreted carefully by a professional. A “reassuring” HINTS exam does not completely rule out an AICA stroke, especially when a patient has new hearing loss. ^[16][17]
• Imaging: Depending on your symptoms and stroke risk factors, your doctor may order an MRI of the brain and inner ear, and vascular imaging (such as an MRA or CTA, which is a CT angiogram) to look for stroke, arterial dissection, or inner ear bleeding. ^[11][18] Not every patient with sudden hearing loss requires an emergency MRI, but it may be used to evaluate the nerve pathways. ^[6] Keep in mind that very early MRIs (within the first 24-48 hours) can sometimes appear normal even if a small brainstem stroke has occurred. ^[19] If your symptoms persist or are highly concerning, ongoing assessment and repeat imaging may be necessary. ^[19][15]
• Audiometry: A formal hearing test (audiogram) should be done as soon as possible to confirm whether the hearing loss is conductive (blockage in the outer or middle ear) or sensorineural (inner ear/nerve issue). ^[6]