The Short Answer Educational content only. Any suspected concussion warrants medical evaluation. New, severe, or changing headache after head injury warrants prompt assessment by a physician, neurologist, or headache specialist to confirm the diagnosis and exclude dangerous causes. Consult a concussion-experienced clinician for individualized care. Behind-the-eye pain differs from typical post-concussion headache because pain centered around or behind one eye, especially with tearing, redness, or a runny nose on that side, points toward a trigeminal autonomic cephalalgia such as cluster headache rather than the usual tension-type or migraine pattern (Ashina et al., 2019). Most post-concussion headache is a bilateral pressing tension-type ache or a migraine, but strictly one-sided pain behind the eye with same-side autonomic features is the signature of a different disorder that has specific treatment. Behind-the-eye pain can also reflect eye-strain from post-concussion visual and oculomotor dysfunction. Recognizing the retro-orbital location and what accompanies it changes both the diagnosis and the treatment. Typical post-concussion headache is bilateral tension-type or migraine. One-sided behind-the-eye pain with autonomic features suggests a trigeminal autonomic cephalalgia. It can also reflect visual and oculomotor dysfunction from the injury. What Typical Post-Concussion Headache Looks Like Most headache after concussion takes a tension-type or migraine form. Tension-type headache is a bilateral, pressing, band-like ache of mild to moderate intensity without prominent associated features. Migraine is often one-sided and throbbing, moderate to severe, with nausea and sensitivity to light and sound. Both are common, and many people have a mixture. Against this background, pain that is sharply localized behind one eye, particularly with autonomic signs, stands out as a different pattern worth investigating. Why Behind-the-Eye Pain Points Elsewhere The region around and behind the eye is densely supplied by the first division of the trigeminal nerve and sits close to the cranial autonomic pathways. When pain concentrates here on one side and is accompanied by same-side tearing, redness of the eye, nasal congestion or running, eyelid drooping, or restlessness, it suggests activation of the trigeminal-autonomic reflex that defines the trigeminal autonomic cephalalgias, a group that includes cluster headache, paroxysmal hemicrania, hemicrania continua, and SUNCT. These disorders can be triggered by head trauma and carry specific, sometimes highly specific, treatments distinct from typical post-concussion headache care. The distinguishing features are the strict one-sidedness, the concentration behind or around the eye, the same-side autonomic signs, and the attack pattern, whether brief and clustered, continuous, or ultrashort and frequent. These clues separate a trigeminal autonomic cephalalgia from ordinary migraine, which can also cause retro-orbital pain but usually lacks the prominent same-side autonomic features and the characteristic timing. The Visual Dysfunction Contribution Behind-the-eye pain after concussion is not always a trigeminal autonomic cephalalgia. Concussion commonly disrupts the eye-movement and focusing systems, producing convergence insufficiency and eye-teaming problems, and the strain of these visual demands generates pain in and behind the eyes, especially with reading and screen use. This eye-strain headache builds with visual work and eases with rest, and it comes with blurring, double vision, or difficulty focusing rather than autonomic signs. Recognizing this pattern points toward a vision assessment and vision therapy rather than headache medication. Symptom Presentation Pain concentrated behind or around one eye Same-side tearing, redness, nasal congestion, or eyelid drooping, suggesting a trigeminal autonomic cephalalgia Restlessness during attacks in cluster headache A distinct attack pattern: brief and clustered, continuous, or ultrashort and frequent Alternatively, pain that builds with reading and screens, suggesting visual strain Blurring or double vision with the eye-strain pattern Assessment A clinician characterizes the behind-the-eye pain by its laterality, accompanying autonomic features, attack pattern, and relationship to visual work. Prominent same-side autonomic signs and a characteristic attack pattern prompt evaluation for a trigeminal autonomic cephalalgia by a neurologist or headache specialist, generally with brain imaging to exclude a structural cause. A pattern tied to reading and screens with visual symptoms prompts assessment by a neuro-optometrist for convergence and eye-teaming dysfunction. Distinguishing these directs quite different treatments. Treatment Approach Treatment follows the identified cause. A trigeminal autonomic cephalalgia is treated with its specific therapies, which differ sharply from typical headache treatment and are directed by a specialist, cluster headache with oxygen and fast-acting triptans and specific preventives, the indomethacin-responsive disorders with indomethacin, and SUNCT with its particular medications. Recognizing the pattern is what unlocks these specific treatments. Eye-strain behind-the-eye pain is treated by addressing the visual dysfunction: vision therapy from a neuro-optometrist for convergence and eye-teaming, along with accommodations such as reduced screen time, larger text, and frequent visual breaks during recovery. Across both causes, the general supports apply, managing the cervical contribution, protecting sleep, regulating the autonomic nervous system, and avoiding medication overuse, but the specific treatment depends on correctly identifying whether the pain is a trigeminal autonomic cephalalgia, a visual-strain headache, or a retro-orbital migraine. Post-traumatic headache often has a cervical and autonomic component that responds to daily mobility and nervous system regulation alongside medical care. Start your 3-day free trial to build a supportive routine. Supporting Mobility Routine JME 155 Diaphragmatic breathing lowers the sympathetic drive that fuels headache and supports steady cerebral blood flow. Ten slow breaths, several times daily. JME 14 Chin tucks activate deep cervical flexors and reduce the upper cervical tension that refers pain to the head. Ten repetitions with 5-second holds. JME 1 Cervical rotation restores segmental mobility at the joints that refer pain into headache through the trigeminocervical nucleus. Ten repetitions per direction. JME 15 Cervical lateral flexion addresses side-bending restriction that sustains neck-driven headache. 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 headache. Ten repetitions per set. JME 150 Thoracic rotation restores mid-back motion needed for full cervical range and relaxed upright posture. Eight repetitions per direction. JME 227 Overhead reach opens the thoracic spine and reduces the compensatory upper cervical extension that drives headache. Ten repetitions with controlled tempo. Start your 3-day free trial for joint-specific mobility programming that addresses the cervical and autonomic contributors to post-traumatic headache. Common Mistakes Treating behind-the-eye pain as ordinary migraine and missing a trigeminal autonomic cephalalgia Overlooking same-side autonomic features that change the diagnosis Missing post-concussion visual dysfunction as a cause of eye-strain pain Not imaging when a trigeminal autonomic cephalalgia is suspected Applying general headache treatment to a disorder with specific therapy Progression Assessment characterizes the retro-orbital pain by laterality, autonomic features, attack pattern, and relationship to visual work. Prominent autonomic signs prompt specialist evaluation and imaging for a trigeminal autonomic cephalalgia with its specific treatment, while a visual-strain pattern prompts neuro-optometric assessment and vision therapy. General supports apply across causes, but correct identification directs the specific treatment. What does behind-the-eye pain after a concussion usually mean? Strictly one-sided pain behind the eye with same-side autonomic features such as tearing, redness, or a runny nose points toward a trigeminal autonomic cephalalgia like cluster headache rather than typical tension-type or migraine headache. Alternatively, behind-the-eye pain that builds with reading and screens suggests eye-strain from post-concussion visual dysfunction. How is behind-the-eye pain different from typical post-concussion headache? Typical post-concussion headache is a bilateral pressing tension-type ache or a migraine. Pain sharply localized behind one eye, especially with same-side autonomic signs or a distinct attack pattern, indicates a different disorder with specific treatment. The location and what accompanies it are the diagnostic clues. Can concussion cause eye pain from vision problems rather than headache? Yes. Concussion commonly disrupts eye-movement and focusing systems, producing convergence and eye-teaming problems whose strain generates pain in and behind the eyes, especially with reading and screens. This eye-strain pain comes with blurring or double vision rather than autonomic signs and points toward vision assessment and therapy. Why does behind-the-eye pain need a specific diagnosis? Because the causes have quite different treatments. A trigeminal autonomic cephalalgia responds to specific therapies such as oxygen, fast-acting triptans, or indomethacin depending on the type, and visual-strain pain responds to vision therapy. Treating it as ordinary migraine misses these specific, often highly effective, treatments. Should behind-the-eye pain after a concussion be imaged? When a trigeminal autonomic cephalalgia is suspected from one-sided pain with autonomic features, brain imaging is generally obtained to exclude a structural cause before settling on the diagnosis. New, severe, or changing behind-the-eye pain after head injury warrants prompt medical assessment to guide the right evaluation. Red Flags Requiring Urgent Evaluation The following warrant same-day emergency evaluation rather than routine care. Sudden severe headache that peaks within seconds to minutes Headache with fever, neck stiffness, or rash New weakness, numbness, slurred speech, or facial droop New vision loss, double vision, or a persistent visual change Progressive worsening headache over days to weeks Headache with confusion, drowsiness, or repeated vomiting Headache that is worse lying down, wakes the person, or worsens with straining Sudden severe neck pain with neurological symptoms, suggesting arterial dissection These features can indicate a dangerous cause and take priority over any headache-specific diagnosis. Absence of red flags supports outpatient evaluation and management. Tracking Triggers and Patterns With a Headache Diary A headache diary is one of the most useful tools for post-traumatic headache. Recording the timing, location, quality, and severity of each headache, along with sleep, meals, hydration, menstrual cycle, weather, activity, and medication use, reveals the patterns and triggers that guide treatment. Over a few weeks, a diary shows whether headaches cluster around specific triggers, whether medication use is creeping toward overuse, and which phenotype dominates. Bringing this record to a clinician sharpens the diagnosis and the plan far more than memory alone. Medication Overuse Headache Frequent use of acute headache medication can produce medication overuse headache, where the treatment itself sustains a daily or near-daily headache. This is common after concussion, when frequent pain drives frequent medication use. As a general guide, using simple analgesics on 15 or more days per month, or triptans, combination analgesics, or opioids on 10 or more days per month, raises the risk. Preventive treatment and careful limits on acute medication, guided by a clinician, break the cycle. Why Location and Triggers Matter for Diagnosis Post-traumatic headache is not one condition. Its location, timing, quality, and triggers point toward specific phenotypes, migraine, tension-type, cervicogenic, or a trigeminal autonomic cephalalgia, and each has different treatment. Where the pain sits, what sets it off, and how it behaves are diagnostic clues, not incidental details. A precise diagnosis by a physician, neurologist, or headache specialist, using the criteria of the International Classification of Headache Disorders, directs the person to the treatment most likely to work and avoids prolonged trial and error. A cervical contribution is common across phenotypes and responds to physical therapy alongside medical care. References Ashina, H., et al. (2019). Post-traumatic headache: epidemiology and pathophysiological insights. Nature Reviews Neurology, 15(10), 607-617. PubMed Headache Classification Committee of the International Headache Society (IHS). (2018). The International Classification of Headache Disorders, 3rd edition. Cephalalgia, 38(1), 1-211. 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