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. Aversion to specific colors happens after concussion because certain wavelengths of light, particularly blue and the flicker of fluorescent and screen light, stimulate the sensitized light-to-pain pathway more strongly, so those colors provoke discomfort, headache, or symptom flare (Bansal & Green, 2022). The eye's light-sensing cells respond differently to different wavelengths, and the pathway linking light to the brain's pain and discomfort systems is more strongly driven by some wavelengths than others. After concussion this pathway is sensitized, so the wavelengths that stimulate it most, notably blue light and the specific spectrum and flicker of fluorescent and screen lighting, become the most aversive. It is a targeted form of light sensitivity rather than a color-vision problem. Selective tinted lenses that filter the offending wavelengths, adjusted lighting, and treating the underlying photophobia reduce the aversion. Some wavelengths drive the light-to-pain pathway more strongly than others. Concussion sensitizes this pathway, so specific colors become aversive. Filtering the offending wavelengths with tinted lenses reduces the aversion. What Color Aversion After Concussion Is Some people after concussion find that specific colors or types of colored light are particularly uncomfortable, provoking eye discomfort, headache, unease, or a flare of symptoms. The most common offenders are blue light and the harsh, cool light of fluorescent and some screen lighting, and bright, saturated colors and high-contrast or flickering colored displays can also trigger it. This is not a problem with seeing colors, color vision itself is intact, but with how certain wavelengths of light feel. It is best understood as a wavelength-specific form of the light sensitivity, or photophobia, common after concussion. Why Specific Wavelengths Are Worse Light is made of different wavelengths, perceived as different colors, and the eye's light-sensing cells do not respond to all of them equally. The specialized cells that signal overall brightness and feed into the light-to-pain pathway are especially responsive to blue light. Because this pathway, running from the eye to the trigeminal pain and sensory networks, is the route by which light causes discomfort, the wavelengths that most strongly stimulate it, particularly in the blue range, produce the most discomfort when the pathway is sensitized. After concussion the light-to-pain pathway is amplified, so its wavelength preferences are exaggerated: the blue and cool wavelengths that drive it most become disproportionately aversive. Fluorescent and many screen light sources emit strongly in these wavelengths and often flicker, which adds a further provocation, so these lighting types are common triggers. This is why the aversion clusters around specific colors and light sources rather than affecting all light equally. Why Tinted Lenses Can Help Because the aversion is wavelength-specific, filtering out the offending wavelengths can relieve it, which is the rationale behind tinted lenses for post-concussion light sensitivity. A tint designed to block or reduce the particular wavelengths that most drive the light-to-pain pathway, often those in the blue range, lets the rest of the visible light through while cutting the most provocative part, making ordinary environments more tolerable. This targeted filtering is more useful than simply darkening everything, which is why a specific tint, used selectively for challenging environments, is preferred over general dark glasses worn constantly. The lenses support re-engagement with light-rich settings rather than avoidance of them. Symptom Presentation Specific colors or colored light provoking discomfort or headache Blue light and cool fluorescent or screen light as common triggers Bright, saturated colors and flickering colored displays worsening symptoms Intact color vision despite the discomfort Relief when the offending wavelengths are filtered or avoided Overlap with general light sensitivity and headache Worsening in fluorescent-lit stores and offices Assessment A neuro-optometrist assesses color and wavelength sensitivity as part of the broader post-concussion visual and light-sensitivity picture, identifying which wavelengths and lighting types are most provocative and confirming that color vision itself is intact. The assessment considers coexisting photophobia, focusing and eye-teaming problems, and dry eye, which add to light discomfort, and the underlying headache, since treating it reduces sensitivity. Trialing specific tints during assessment helps identify which filtering provides relief. Treatment Approach Selective tinted lenses are the main targeted treatment. A tint that filters the wavelengths most linked to discomfort, often in the blue range, reduces the aversion while preserving useful vision and color perception, and it is used for challenging environments such as fluorescent-lit workplaces rather than worn constantly. Adjusting the lighting environment helps as much: replacing harsh fluorescent lighting with warmer, flicker-free light, reducing screen blue light and glare, and using natural light where possible remove the worst triggers. Because color aversion is a form of photophobia, the broader photophobia approach applies. Graded light exposure prevents the tolerance-narrowing that constant avoidance causes, treating the underlying headache reduces the sensitivity the aversion rides on, and autonomic regulation and protected sleep raise tolerance. Addressing coexisting dry eye and focusing problems relieves added discomfort. As the brain recovers and the light-to-pain pathway settles, wavelength-specific aversion generally eases, with selective filtering and lighting adjustments making daily environments tolerable in the meantime. 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 Mistaking wavelength sensitivity for a color-vision problem Using general dark glasses instead of a specific targeted tint Wearing tinted lenses constantly rather than selectively Ignoring harsh fluorescent and flickering lighting as triggers Treating the aversion without addressing the underlying photophobia and headache Progression Assessment identifies the provocative wavelengths and lighting, confirms intact color vision, and trials specific tints. Treatment combines selective tinted lenses and lighting adjustments with the broader photophobia approach of graded light exposure, headache management, and autonomic regulation. Wavelength-specific aversion generally eases as the light-to-pain pathway settles, with filtering and lighting changes making environments tolerable in the meantime. Why do certain colors bother me after a concussion? Certain wavelengths of light, particularly blue and the cool spectrum of fluorescent and screen light, stimulate the light-to-pain pathway more strongly than others. After concussion this pathway is sensitized, so those wavelengths become disproportionately aversive, provoking discomfort or headache. It is a wavelength-specific form of light sensitivity, not a color-vision problem. Is color aversion after a concussion a problem with my color vision? No. Color vision itself is intact. The issue is how certain wavelengths of light feel rather than how they are seen. Specific wavelengths, especially in the blue range, strongly drive the sensitized light-to-pain pathway, so they cause discomfort even though color perception is normal. Why is fluorescent light especially hard to tolerate? Fluorescent and many screen light sources emit strongly in the blue and cool wavelengths that most drive the light-to-pain pathway, and they often flicker, which adds a further provocation. In a sensitized post-concussion visual system, this combination of provocative wavelengths and flicker makes fluorescent-lit stores and offices particularly uncomfortable. How do tinted lenses help color aversion? Because the aversion is wavelength-specific, a tint designed to filter the particular wavelengths that most drive the light-to-pain pathway, often in the blue range, reduces the discomfort while letting the rest of the light through and preserving color perception. Used selectively for challenging environments, this targeted filtering is more useful than general dark glasses. Will color and light aversion go away after a concussion? Generally it eases as the brain recovers and the light-to-pain pathway settles, especially with graded light exposure, treating the underlying headache, and autonomic regulation. Selective tinted lenses and lighting adjustments make daily environments tolerable in the meantime. Persistent aversion warrants assessment by a neuro-optometrist. 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 Bansal, S., & Green, K. (2022). Application of colored filters in patients post-traumatic brain injury: A review. NeuroRehabilitation, 50(3), 321-330. 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