Why Sound Can Become Painful During a Migraine

Sound is everywhere. A conversation in the next room. Traffic outside a window. The hum of an air conditioner. The ping of a notification. In ordinary life these sounds register and fade without consequence. During a migraine attack, the same sounds can feel like a physical assault. A door closing in another part of the house can intensify head pain. A raised voice can produce a wave of nausea. Music that was playing softly before the attack began becomes intolerable.

This is phonophobia, and like photophobia it is not simply discomfort or preference. It is a neurological symptom produced by the same sensitized pain processing system that drives the headache itself.

How Prevalent Is Phonophobia

Phonophobia is among the most consistently reported features of migraine. Research has found it present in approximately eighty percent of migraine attacks, making it comparable in prevalence to photophobia and substantially more common than vomiting. Like photophobia, it is included in the diagnostic criteria for migraine by the International Headache Society.

Also like photophobia, phonophobia is not confined to the headache phase. Studies using electronic diary methodology have found that sound sensitivity can appear during the prodrome, hours before the headache begins, and can persist into the postdrome phase after pain has resolved. Some people with migraine report a degree of interictal sound sensitivity between attacks.

The Neurological Mechanism

The pathway that transforms ordinary sound into pain during a migraine attack involves several overlapping systems in the brain. The auditory cortex, which processes sound, and the trigeminal pain system, which drives migraine pain, share functional connections through the thalamus. When the trigeminal system is activated during a migraine attack, it sensitizes thalamic neurons that relay both pain signals and sensory input from multiple modalities including hearing. This sensitization means that auditory signals that would normally be processed without triggering pain instead activate pain pathways in the sensitized migraine brain.

The same phenomenon of central sensitization that produces allodynia, in which normally non-painful touch becomes painful during a migraine, appears to underlie phonophobia. Research from migraine neuroimaging studies has shown activation in the auditory cortex during migraine attacks that is not present between attacks, suggesting that the auditory system is in a heightened state of activation during the attack.

Why Certain Sounds Are Worse

Not all sounds produce equal phonophobic distress during a migraine attack. High-pitched sounds are generally reported as more distressing than low-pitched ones. Sudden sounds, particularly unexpected ones, are often more difficult to tolerate than continuous background sound. This may reflect the startle response, which involves rapid activation of the same brainstem regions that process trigeminal pain input.

Loud sounds are obviously more distressing than quiet ones, but the threshold for what counts as loud shifts dramatically during a migraine. Sounds at normal conversational volume may exceed the phonophobic threshold during a severe attack.

Rhythmic or repetitive sounds, including music with a strong beat, are frequently reported as particularly difficult to tolerate. The oscillating nature of rhythmic sound may interact with the pulsating quality of migraine pain in ways that amplify both.

Phonophobia and Its Impact on Daily Functioning

The practical consequences of phonophobia during a migraine attack extend well beyond the immediate experience of pain. Workplaces, schools, public transportation, restaurants, and most social environments contain levels and types of sound that are difficult to avoid. For someone in the middle of a severe attack, these environments become inaccessible.

This inaccessibility is a significant driver of migraine-related disability. A person who could theoretically continue working through moderate head pain may be unable to remain in an open-plan office once phonophobia sets in. Research examining the disability associated with migraine consistently finds that associated symptoms including photophobia and phonophobia contribute substantially to overall attack-related impairment.

Practical Management

The most effective immediate intervention for phonophobia during an attack is sound reduction. Earplugs, noise-canceling headphones worn without audio input, or simply moving to a quiet room can meaningfully reduce phonophobic distress. The goal is not complete silence, which can itself become uncomfortable in some cases, but a reduction in sound intensity and unpredictability.

White noise or very low-volume consistent sound is tolerated better by some people than complete silence. The steady, predictable nature of white noise may reduce the contrast between silence and sudden sounds that is particularly difficult to manage.

Treating the migraine attack effectively is ultimately the most reliable way to resolve phonophobia, because phonophobia is a symptom of the neurological event rather than an independent problem.

Between Attacks

Some people with migraine notice that their sound sensitivity is chronically elevated compared to people without migraine, even during headache-free periods. This interictal hypersensitivity may reflect the underlying neurological excitability of the migraine brain.

Managing cumulative sensory load is nonetheless relevant. People who spend many hours each day in high-noise environments may find that the chronic sensory burden contributes to their overall migraine threshold. This is worth exploring through tracking and, where possible, environmental modification.