The Short Answer Educational content only. Any suspected concussion warrants medical evaluation. Persistent sensory symptoms after concussion warrant assessment by the appropriate specialist, an audiologist or ENT for hearing and sound symptoms, a neuro-optometrist or ophthalmologist for visual and eye symptoms, and a physician or neurologist to coordinate care. Consult a concussion-experienced clinician for individualized care. Phonophobia persists after concussion because the sensitized brain processes sound as threatening and aversive, producing discomfort and a drive to avoid noise even at normal volumes (Ashina et al., 2019). Phonophobia is an aversion to sound and a heightened sensitivity in which noise feels unpleasant and drives avoidance. It is closely tied to the migraine and headache mechanisms common after concussion, where sound amplifies head pain and the brain learns to treat noise as a threat. Total avoidance of sound deepens the sensitivity over time. Recovery comes from graded sound exposure, treating the underlying headache, and calming the sensitized nervous system, rather than from seeking silence. Phonophobia is an aversion to sound with a drive to avoid it. It is tied to the migraine and headache mechanisms of concussion. Graded exposure and headache treatment help, and avoidance deepens it. What Phonophobia Is Phonophobia is a heightened sensitivity and aversion to sound. Unlike hyperacusis, where sound feels physically too loud, phonophobia is more about the unpleasantness and threat of sound and the strong urge to avoid it, though the two overlap and often occur together. In phonophobia, normal noise feels irritating, overwhelming, or distressing, and the person seeks quiet and avoids noisy environments. Phonophobia is one of the cardinal features of migraine, alongside light sensitivity, and it is extremely common after concussion given how often post-traumatic headache carries a migraine phenotype. Why the Sensitized Brain Treats Sound as Aversive After concussion the brain is in a sensitized, hyperexcitable state with a lowered threshold across sensory systems. In the auditory and pain pathways, this means sound is processed with heightened intensity and is more readily linked to discomfort. In migraine and post-traumatic headache, activation of the trigeminal pain system interacts with sensory processing so that sound amplifies pain and pain amplifies sound sensitivity. The brain, in effect, learns that noise accompanies and worsens pain, and it responds by treating sound as aversive and something to avoid. This is why phonophobia clusters with headache and worsens during attacks, and why it forms part of the same sensory hypersensitivity that includes light sensitivity. The aversion is a genuine product of a sensitized nervous system, not oversensitivity of character. Why Avoidance Makes It Worse The natural response to aversive sound is to avoid it, seeking quiet and withdrawing from noisy settings. In the short term this brings relief, but sustained avoidance narrows the range of sound the nervous system tolerates, so tolerance shrinks and re-entering normal environments becomes harder. Complete withdrawal into silence trains the system to treat an even wider range of sound as threatening. This avoidance trap is why silence is not the cure, and why graded re-exposure is central to recovery. Symptom Presentation Normal sound feels unpleasant, overwhelming, or distressing A strong drive to avoid noise and seek quiet Worsening during headache and migraine attacks Frequent coexisting light sensitivity Withdrawal from noisy social and work settings Fatigue and headache provoked by sound exposure Narrowing tolerance with sustained avoidance Assessment A clinician characterizes the sound aversion, its relationship to headache, and its overlap with hyperacusis and light sensitivity, since these guide treatment. An audiologist measures sound tolerance when the picture is unclear. Because phonophobia is closely tied to migraine, the assessment identifies the underlying headache phenotype, as treating the headache often reduces the phonophobia. Coexisting anxiety and autonomic dysregulation, which amplify the aversion, are also weighed. Treatment Approach Treating the underlying headache is a central lever, because phonophobia rides on the migraine mechanism. When post-traumatic migraine is managed with acute and preventive strategies, the sound sensitivity that accompanies it often eases. This is why headache treatment and phonophobia treatment go together. Graded sound exposure retrains tolerance. Rather than pursuing silence, the person maintains a comfortable level of everyday sound and gradually widens exposure as tolerance grows, reversing the avoidance trap. Autonomic regulation through diaphragmatic breathing lowers the arousal that amplifies aversion, and managing anxiety reduces the threat response to sound. Protecting sleep raises tolerance, since fatigue lowers it. As the brain recovers and the headache is controlled, phonophobia generally improves, and avoiding total silence throughout keeps tolerance from narrowing. Sensory symptoms after concussion improve faster when the nervous system is regulated and the neck and autonomic system are addressed alongside specialist care. Start your 3-day free trial to build a supportive daily routine. Supporting Mobility Routine JME 155 Diaphragmatic breathing lowers the sympathetic drive that amplifies sensory sensitivity and steadies the nervous system. Ten slow breaths, several times daily. JME 14 Chin tucks reduce upper cervical tension that feeds headache, dizziness, and sensory overload. Ten repetitions with 5-second holds. JME 1 Cervical rotation restores segmental mobility and supports blood flow through the vertebral arteries to the brain. Ten repetitions per direction. JME 15 Cervical lateral flexion addresses side-bending restriction that sustains neck tension and sensory strain. Ten repetitions per side. JME 16 Cervical flexion and extension restore sagittal mobility restricted by suboccipital guarding. Eight slow repetitions. JME 2 Cervical retraction reinforces a neutral head position that reduces the postural strain feeding sensory symptoms. Ten repetitions per set. JME 150 Thoracic rotation restores mid-back motion needed for full diaphragmatic breathing and relaxed upright posture. Eight repetitions per direction. JME 227 Overhead reach opens the thoracic spine and rib cage, supporting the deep breathing that calms an overloaded nervous system. Ten repetitions with controlled tempo. Start your 3-day free trial for joint-specific mobility programming that supports the nervous system regulation behind sensory recovery after concussion. Common Mistakes Seeking constant silence, which narrows sound tolerance over time Treating phonophobia without addressing the underlying headache Ignoring coexisting light sensitivity and anxiety that amplify it Withdrawing from all noisy environments rather than re-entering gradually Leaving sleep and autonomic dysregulation unaddressed Progression Assessment links phonophobia to the underlying headache and separates it from hyperacusis. Treatment manages the post-traumatic migraine, uses graded sound exposure to reverse avoidance, and regulates the autonomic nervous system, with attention to sleep and anxiety. Phonophobia generally improves as the headache is controlled and the brain recovers, provided total silence is avoided. What is phonophobia after a concussion? Phonophobia is an aversion and heightened sensitivity to sound, in which normal noise feels unpleasant or distressing and drives avoidance. After concussion it reflects a sensitized brain that processes sound as aversive, and it is closely tied to the migraine and headache mechanisms common after injury. Why does noise bother me so much after a concussion? The sensitized post-concussion brain processes sound with heightened intensity and links it to discomfort, especially through the migraine and pain pathways where sound amplifies head pain. The brain learns to treat noise as a threat and responds with aversion. This is a genuine product of a sensitized nervous system. How is phonophobia different from hyperacusis? Hyperacusis is when sound feels physically too loud, driven by increased auditory gain. Phonophobia is an aversion to sound and a drive to avoid it, more about unpleasantness and threat, and closely tied to migraine. They overlap and often occur together, but differ in emphasis and mechanism. Should I avoid noisy places to manage phonophobia? Not entirely. Short-term relief from avoidance comes at the cost of narrowing sound tolerance, so complete withdrawal into silence deepens phonophobia. Graded exposure, keeping a comfortable level of everyday sound and widening it gradually, retrains tolerance, while treating the underlying headache reduces the aversion. Will phonophobia improve as my concussion heals? Generally yes, especially as the underlying headache is controlled and the brain recovers. Managing the post-traumatic migraine, using graded sound exposure, regulating the autonomic nervous system, and protecting sleep all speed improvement. Persistent phonophobia warrants headache and audiology assessment. Why Sensory Symptoms Happen After Concussion Sensory symptoms after concussion arise from disrupted sensory processing rather than damage to the sense organs alone. Concussion strains the connections between brain regions, alters the balance of excitation and inhibition, and leaves the nervous system in a sensitized, hyperexcitable state (Silverberg et al., 2020). In this state the brain turns up the gain on incoming signals, so ordinary light, sound, smell, taste, and touch are amplified, distorted, or perceived when absent. Some symptoms also reflect direct injury to sensory nerves. Most sensory symptoms improve over weeks to months as the brain recovers and the gain settles, and structured management speeds the process. Graded Exposure and Avoiding Overprotection A common trap in sensory recovery is total avoidance. Completely shielding from light, sound, or activity feels protective, but sustained avoidance makes the nervous system more sensitive over time, narrowing tolerance further. The better approach is graded exposure: staying within a tolerable range while gradually and deliberately increasing exposure as tolerance grows, never pushing far past the point where symptoms flare. This retrains the nervous system to accept normal sensory input. Extreme protection, such as constant dark glasses indoors or continuous earplug use, tends to worsen sensitivity and is used sparingly and strategically rather than continuously. Managing Sensory Overload Reduce competing sensory input by handling one channel at a time Take planned breaks in a calm, low-stimulation environment before overload builds Use diaphragmatic breathing to lower the arousal that amplifies sensitivity Pace demanding sensory environments rather than avoiding them entirely Protect sleep, since fatigue lowers sensory tolerance Treat coexisting headache, since pain and sensory sensitivity feed each other When to Seek Specialist Assessment Persistent or worsening sensory symptoms, symptoms that interfere with work or daily life, and any symptom with concerning features warrant specialist assessment. Hearing and sound symptoms are evaluated by an audiologist or ENT, who can test hearing and guide sound therapy. Visual and eye symptoms are evaluated by a neuro-optometrist or ophthalmologist. Smell and taste symptoms are evaluated by an ENT. A physician or neurologist coordinates care and excludes other causes. Pulsatile tinnitus, sudden vision or hearing loss, and rapidly worsening symptoms need prompt evaluation rather than watchful waiting. The Autonomic and Cervical Contribution Sensory symptoms rarely stand alone after concussion. Autonomic dysregulation keeps the nervous system in a heightened, sympathetic-dominant state that amplifies sensitivity, and cervical dysfunction feeds headache, dizziness, and sensory strain through shared brainstem pathways. Regulating the autonomic nervous system with diaphragmatic breathing and graded activity, and addressing the neck with mobility and manual therapy, lower the background arousal on which sensory symptoms ride. This is why calming the nervous system as a whole often eases sensory symptoms that specialist treatment alone does not fully resolve. References Ashina, H., et al. (2019). Post-traumatic headache: epidemiology and pathophysiological insights. Nature Reviews Neurology, 15(10), 607-617. PubMed Patricios, J. S., et al. (2023). Consensus statement on concussion in sport: the 6th International Conference on Concussion in Sport, Amsterdam, October 2022. British Journal of Sports Medicine, 57(11), 695-711. PubMed Silverberg, N. D., et al. (2020). Management of concussion and mild traumatic brain injury: a synthesis of practice guidelines. Archives of Physical Medicine and Rehabilitation, 101(2), 382-393. PubMed