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. Post-concussion headaches worsen with weather changes because the sensitized post-traumatic brain overreacts to shifts in barometric pressure, temperature, humidity, and bright or storm-related light (Ashina et al., 2019). Concussion lowers the threshold at which the pain system fires, so environmental inputs that a healthy brain absorbs without notice become headache triggers. Weather is a bundle of these inputs changing at once, falling pressure before a storm, temperature and humidity swings, and brighter or more variable light, so a weather front delivers several triggers together. This is why many people with post-traumatic headache feel a change coming in their head. Tracking the pattern, stabilizing daily routines, and treating the underlying headache phenotype reduce weather sensitivity as the brain recovers. The sensitized brain overreacts to environmental change. Weather bundles several triggers, pressure, temperature, humidity, and light, at once. Treating the underlying phenotype reduces weather sensitivity over time. Why the Post-Traumatic Brain Reacts to Weather Concussion leaves the brain and its pain-processing pathways in a sensitized, hyperexcitable state. In this state the threshold for triggering headache drops, so inputs that would normally be filtered out reach the pain system and set off an attack. Weather is a striking example because it changes several physical inputs simultaneously. A person whose headache system is finely balanced after injury is pushed over the edge by the combined shift, while an uninjured person notices nothing. This sensitivity is genuine and physiological. It reflects a lowered trigger threshold, not imagination or suggestion, and it is one of the most commonly reported trigger patterns in both migraine and post-traumatic headache. The Weather Inputs That Trigger Headache Several components of a weather change contribute. Barometric pressure typically falls before a storm, and this drop is one of the most reported weather triggers, likely acting through pressure-sensitive structures in the sinuses and the trigeminal system. Temperature swings, both heat and sudden cold, stress the system. Rising humidity and the conditions before a thunderstorm add further load. Brighter or rapidly changing light, glare before or after storms, and the light sensitivity common after concussion combine so that visual input becomes a trigger too. Because these inputs move together during a weather change, it is often impossible to isolate a single culprit. The practical point is that the front as a whole is the trigger, and the brain responds to the combined shift. Why This Is Hard to Control Weather cannot be avoided, which makes it a frustrating trigger. Unlike sleep or hydration, it is outside personal control, so management focuses on reducing the brain's sensitivity and on cushioning the other triggers that stack with weather. When weather is one of several triggers loading the system at once, removing the controllable triggers, poor sleep, dehydration, skipped meals, stress, can keep the total load below the headache threshold even when the weather itself pushes it up. This trigger-stacking model explains why the same weather change causes a headache on a bad-sleep day but not on a well-rested one. Symptom Presentation Headaches that cluster around weather fronts and storms A sense of a headache building as the weather changes Worsening with falling pressure, temperature swings, or humidity Light sensitivity that rises in bright or stormy conditions Headaches worse when weather stacks with poor sleep or dehydration Variability, since not every weather change triggers an attack Assessment A clinician uses a headache diary that records weather alongside sleep, hydration, meals, and other triggers to confirm the pattern and see how weather stacks with controllable factors. The assessment identifies the underlying headache phenotype, since weather commonly triggers migraine and post-traumatic migraine, and treating the phenotype reduces the sensitivity. It also excludes the possibility that apparent weather sensitivity is driven by a controllable trigger that happens to coincide with weather, such as sleeping poorly during storms. Treatment Approach Lowering the brain's overall sensitivity is the central strategy, because the weather itself cannot be changed. Treating the underlying headache phenotype, with migraine preventive and acute strategies when migraine features dominate, raises the trigger threshold so weather is less able to cross it. As the brain recovers from concussion, sensitivity generally decreases. Removing the controllable triggers that stack with weather keeps the total load down. Consistent sleep, steady hydration, regular meals, stress regulation, and avoiding medication overuse all cushion the effect of a weather change. On days when a front is forecast, protecting these basics and reducing other exposures, such as bright light and exertion, helps keep the load below threshold. Diaphragmatic breathing and graded activity support the autonomic regulation that steadies the system. Addressing the cervical contribution reduces one more input feeding the headache. 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 weather as the only trigger while ignoring the controllable ones that stack with it Not tracking the pattern in a diary to confirm the relationship Overlooking the underlying migraine phenotype that weather is triggering Allowing medication overuse that lowers the threshold further Neglecting sleep and hydration on forecast bad-weather days Progression A diary confirms the weather pattern and how it stacks with controllable triggers. Treatment lowers overall sensitivity by managing the underlying phenotype and removing stacking triggers, with extra attention to sleep, hydration, and light on forecast days. Autonomic regulation and cervical care support the plan. Weather sensitivity generally decreases as the brain recovers and the headache disorder is treated. Is weather sensitivity after a concussion real? Yes. It reflects a genuine, physiological lowering of the headache trigger threshold after injury, so the sensitized brain overreacts to weather inputs a healthy brain filters out. Weather sensitivity is one of the most commonly reported trigger patterns in migraine and post-traumatic headache, not imagination or suggestion. Which part of a weather change triggers my headache? Usually several at once. Falling barometric pressure before a storm, temperature swings, rising humidity, and brighter or more variable light all change together during a front, and the brain responds to the combined shift. Because these move together, it is often impossible to isolate a single culprit. Why does the same weather trigger a headache some days but not others? Triggers stack. Weather adds to whatever other load the system is carrying, so it crosses the headache threshold on a poor-sleep or dehydrated day but not on a well-rested, well-hydrated one. Keeping the controllable triggers low can keep the total below threshold even when the weather pushes it up. How can I reduce weather-triggered headaches if I can't change the weather? Lower the brain's overall sensitivity by treating the underlying headache phenotype, and remove the controllable triggers that stack with weather: keep sleep, hydration, and meals consistent, regulate stress, and avoid medication overuse. On forecast bad-weather days, protect these basics and reduce bright light and exertion. Will weather sensitivity improve as my concussion heals? Generally yes. The sensitivity reflects a sensitized, hyperexcitable brain, and as the brain recovers the trigger threshold rises, so weather is less able to provoke a headache. Treating the underlying headache disorder speeds this improvement, while unmanaged triggers and medication overuse slow it. 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