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. Concussion triggers new daily persistent headache when a headache begins abruptly after the injury and continues every day without remission from the start (Ashina et al., 2019). New daily persistent headache is defined by a clear, often precisely remembered day of onset, followed by a headache that is present daily and unremitting from the beginning rather than building up over time. After concussion it reflects persistent activation of the pain-processing and inflammatory pathways in a brain and neck primed by trauma, with the pain system failing to switch back off. Because the headache takes on migraine-like or tension-type features, treatment targets the dominant phenotype alongside the cervical and autonomic contributors. The headache is daily and unremitting from a clearly remembered onset. Trauma sustains activation of pain pathways that fail to switch off. Treatment targets the dominant headache phenotype plus cervical drivers. What New Daily Persistent Headache Is New daily persistent headache is a distinct headache disorder defined not by how the pain feels but by how it starts and persists. Its hallmark is a headache that is daily and continuous from the day it begins, in a person who does not have a prior history of frequent headache. Many people recall the exact date, and sometimes the exact circumstance, because the headache appeared and simply never stopped. This abrupt, memorable onset separates it from headaches that gradually increase in frequency over months. The pain itself varies. It commonly resembles tension-type headache, migraine, or a mixture of both, so the same person may have a constant pressing ache with superimposed migraine features such as light sensitivity and nausea. What defines the disorder is the daily, unremitting course from a defined starting point. How Concussion Triggers It Head trauma is one of the recognized triggers for new daily persistent headache. The injury activates pain-processing pathways and an inflammatory response, and in this disorder the activation does not resolve as it should. The trigeminovascular system, the network that generates most headache pain, remains switched on, and the brain's pain-modulating systems fail to restore normal balance. The result is a pain state that persists continuously rather than cycling on and off. Several trauma-related factors feed this persistence. Neuroinflammation from the injury sustains sensitization of pain pathways. Cervical injury from the same event refers ongoing pain to the head. Autonomic dysregulation, sleep disruption, and mood changes all lower the threshold for continued pain. Together they hold the headache in a continuous state that outlasts the acute injury. Why It Persists The persistence reflects central sensitization, a state in which the pain-processing system becomes hyperexcitable and self-sustaining. Once sensitized, the system amplifies and continues pain signaling even without ongoing tissue injury. This is why the headache can continue long after the concussion itself has healed. Breaking the cycle requires calming the sensitized pain system, not waiting for a healing process that has already finished. Contributors that keep the system aroused, poor sleep, medication overuse, unmanaged neck pain, and stress, perpetuate it if left unaddressed. Symptom Presentation A headache that became daily and continuous from a clearly remembered day Constant pain present every day without headache-free periods Tension-type quality, migraine features, or a mixture of both Light and sound sensitivity and nausea when migraine features dominate Neck pain and tenderness frequently accompanying the headache Onset after a concussion in a person without prior frequent headache Poor response to treatments aimed at the wrong phenotype Assessment A physician or headache specialist diagnoses new daily persistent headache from the history of abrupt, continuous onset and by excluding other causes of new daily headache. Because a new persistent headache after head injury can rarely signal a dangerous secondary cause, evaluation excludes red flags and, when indicated, includes imaging and other tests. Once secondary causes are excluded, the clinician identifies the dominant phenotype, migraine-like, tension-type, or mixed, since this guides treatment, and assesses cervical, sleep, mood, and medication-overuse contributors. Treatment Approach Treatment targets the dominant phenotype. When migraine features dominate, migraine preventives and acute strategies are used. When tension-type features dominate, the approach shifts accordingly. Because new daily persistent headache can be stubborn, a headache specialist often guides a structured, stepwise plan, and early treatment before deep sensitization sets in tends to work better. Addressing the perpetuating factors is essential. Treating the cervical contribution with physical therapy, correcting sleep, managing mood, and eliminating medication overuse all reduce the input keeping the pain system sensitized. Autonomic regulation through diaphragmatic breathing and graded activity lowers the arousal that sustains the headache. Because the disorder reflects a sensitized, continuously active pain system, calming that system across several fronts at once works better than any single treatment. 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 the headache without identifying its dominant phenotype Overlooking medication overuse that sustains the daily pattern Leaving the cervical contribution untreated Waiting for the headache to resolve on its own after the injury heals Neglecting sleep, mood, and autonomic contributors that perpetuate it Progression Evaluation confirms the abrupt continuous onset, excludes secondary causes, and identifies the dominant phenotype. Treatment targets that phenotype while addressing cervical, sleep, mood, and medication-overuse contributors. Autonomic regulation supports the plan. New daily persistent headache can be persistent, so a headache specialist guides a structured plan, with earlier treatment generally producing better outcomes. What is new daily persistent headache after concussion? It is a headache that becomes daily and continuous from a clearly remembered day after the injury, in a person without prior frequent headache, and persists without headache-free periods. It reflects persistent activation of pain pathways that fail to switch off, and it takes on migraine-like, tension-type, or mixed features. Why do I remember the exact day my headache started? Abrupt, memorable onset is a defining feature of new daily persistent headache. The headache appears and continues daily from that point rather than building gradually, so people often recall the precise date and circumstance. This distinguishes it from headaches that slowly increase in frequency over months. Why does the headache continue after my concussion healed? The disorder reflects central sensitization, a self-sustaining hyperexcitable state of the pain system. Once sensitized, the system continues generating pain even after the injury itself has healed. Breaking the cycle requires calming the sensitized system and removing perpetuating factors, not waiting for further healing. How is new daily persistent headache treated? Treatment targets the dominant phenotype, using migraine or tension-type strategies accordingly, and addresses perpetuating factors including the cervical contribution, sleep, mood, and medication overuse. A headache specialist often guides a structured plan. Earlier treatment, before deep sensitization sets in, tends to work better. Is new daily persistent headache dangerous? The disorder itself is not dangerous, but a new daily headache after head injury must first be evaluated to exclude dangerous secondary causes. Red flags such as sudden severe onset, fever, neurological changes, or progressive worsening warrant urgent evaluation. Once secondary causes are excluded, management focuses on the headache itself. 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 with seizure or loss of consciousness 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. 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. Recognizing medication overuse is essential, because it can mimic or worsen any post-traumatic headache pattern. Why a Precise Diagnosis Matters Post-traumatic headache is not one condition. It takes on the features of recognized primary headache disorders, and each has a specific, sometimes highly specific, treatment. Some headaches respond dramatically to one particular medication, others need targeted preventives, and others improve with cervical and autonomic treatment. 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. Multidisciplinary Care and the Cervical Contribution Post-traumatic headache frequently has more than one driver. A cervical contribution from the neck is common, since the upper cervical joints and nerves refer pain to the head through the trigeminocervical nucleus, the same brainstem region where neck and head pain signals converge. Autonomic dysregulation, sleep disturbance, mood, and medication overuse each add to the picture. Coordinated care works best: a headache specialist or neurologist for diagnosis and medication, a physical therapist for the cervical and postural contribution, and attention to sleep, mood, and autonomic regulation. Treating the neck and nervous system alongside medical management improves many post-traumatic headaches that medication alone does not fully control. 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