Migraine’s Link to Tinnitus and Hyperacusis

**Auditory symptoms, from hearing loss to hyperacusis, are present in 15% to 49% of migraine patients.** A 2026 review paper in the *Journal of Neurology* synthesizes a growing body of evidence showing that migraine is not just a headache disorder but a systemic condition that can directly disrupt auditory function. The research team, led by Wandi Xu, Ni Zhai, and Jingyu Chen, argues that these auditory issues are core symptoms of the disease’s multisensory nature, not just incidental findings. Their analysis points to a specific, three-axis pathological model connecting migraine to problems like tinnitus and hyperacusis, moving beyond simple comorbidity to explain a direct biological link.

### How the Research Was Conducted

This work is a comprehensive narrative review, which means the authors did not conduct a new experiment. Instead, they analyzed and synthesized decades of existing epidemiological, clinical, and basic science research from published literature. Their goal was to consolidate disparate findings into a coherent model. They examined data on the prevalence of auditory symptoms in migraine populations, results from audiological and electrophysiological testing (like auditory brainstem responses), and studies on the molecular and neurological pathways shared by migraine and auditory processing. By integrating these lines of evidence, they constructed a unified explanation for the migraine-auditory link.

### The Three-Axis Pathological Model

The central finding of the review is a proposed framework where migraine drives auditory dysfunction through three interconnected pathological axes.

**Axis 1: Peripheral Vulnerabilities.** The first axis involves direct physical and vascular stress on the inner ear. The anatomy of the cochlea and its blood supply makes it susceptible to the microvascular changes and ischemia (reduced blood flow) common during migraine attacks. The researchers also point to potential disruptions in brain-ear fluid exchange, which could alter the delicate ionic balance necessary for hearing.

**Axis 2: Local Neurochemical Imbalance.** At a molecular level, the same chemicals that facilitate migraine pain can injure the inner ear. The paper highlights glutamate excitotoxicity, where excessive glutamate—a key neurotransmitter in migraine—damages hair cells and auditory neurons. Signaling by neuropeptides like CGRP (calcitonin gene-related peptide), a major player in migraine, and activation of the local immune system further disrupt the cochlea’s homeostasis.

**Axis 3: Central Sensitization.** This axis explains conditions like hyperacusis (sound sensitivity) and tinnitus. Migraine is known to cause a state of central sensitization, where the brain’s pain and sensory processing networks become hyper-reactive. This leads to impaired efferent gating—the brain’s ability to filter out irrelevant signals—and thalamocortical dysrhythmia, a dysfunctional brain rhythm implicated in both migraine aura and phantom sound perception. Essentially, the brain’s volume control for sound is turned up and stuck. This mechanism shares features with other central hypersensitivity disorders, as discussed in our article on PTSD and Tinnitus.

### The High Prevalence of Auditory Abnormalities

The epidemiological data compiled is striking. While 15-49% of migraine patients report auditory symptoms such as tinnitus, hearing loss, or sound sensitivity, objective testing reveals an even broader impact. Auditory electrophysiological tests, which measure the nervous system’s response to sound, show abnormalities in nearly two-thirds (about 67%) of migraine patients. This indicates that subclinical auditory dysfunction is very common, even in individuals who may not yet have noticeable hearing complaints. It supports the idea that auditory disruption is a fundamental part of the migraine process. For those experiencing sound sensitivity, understanding it as part of a broader sensory condition can be validating; more on managing this can be found in our resource on Process-Based Misophonia Treatment.

### Implications for Patient Care and Treatment

This model moves clinical thinking from simply noting comorbidity to targeting specific mechanisms. The authors categorize emerging therapeutic strategies by which axis they address.

The first approach involves **blocking upstream migraine pathways**. Preventive medications that inhibit CGRP or other migraine-specific mechanisms may, by treating the root cause, also prevent or alleviate associated auditory symptoms. The second strategy focuses on **protecting the cochlear microenvironment**. This could involve investigating otoactive compounds that shield the inner ear from excitotoxicity or vascular stress. The third aims at **correcting central hypersensitivity**. Treatments like certain forms of neuromodulation or sound therapy that retrain hyperactive brain networks could be beneficial. For example, cervical stimulation techniques that influence neural pathways might be relevant in this context.

For patients, this framework underscores the importance of comprehensive evaluation. Anyone with migraine should consider discussing auditory health with their doctor, and conversely, patients with unexplained tinnitus or hyperacusis should be screened for migraine history. A cross-disciplinary management plan involving both neurology and otology may yield the best outcomes.

The review, “Migraine and auditory dysfunction: beyond comorbidity” (PMID: 42371148), provides a clear roadmap for future research and a more integrated approach to patient care, firmly establishing auditory health as a key concern in migraine management.