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 barometric pressure changes because falling atmospheric pressure alters the pressure balance in the sinuses and cranial cavity and stimulates pressure-sensitive fibers of the trigeminal system, which is already sensitized after injury (Ashina et al., 2019). Barometric pressure is the weight of the atmosphere, and it drops before storms and rises in fair weather. When it falls, the pressure inside air-filled spaces like the sinuses no longer matches the outside, and pressure-sensitive nerve endings register the difference. In a post-concussion brain with a lowered pain threshold, this signal is amplified into headache. The pressure drop before a storm is the strongest trigger. Because pressure cannot be controlled, treatment lowers the sensitized threshold and manages the triggers that stack with it. Falling pressure unbalances the sinuses and stimulates trigeminal fibers. The sensitized post-traumatic brain amplifies this into headache. Treatment lowers the threshold, since pressure cannot be controlled. What Barometric Pressure Is Barometric pressure, or atmospheric pressure, is the weight of the air above us pressing down. It changes with weather systems: it falls as a low-pressure system and storm approach, and rises with high-pressure fair weather. These changes are constant and usually imperceptible, but they are physically real, and the body has air-filled and fluid-filled spaces whose internal pressure interacts with the outside atmosphere. When the outside pressure changes quickly, as before a storm, the difference across these spaces becomes large enough to be sensed. How Pressure Changes Trigger Headache Two related mechanisms link falling pressure to headache. First, the sinuses are air-filled cavities in the skull, and when outside pressure drops, the pressure inside them no longer matches, creating a pressure gradient across their walls. The sinus and surrounding tissues are richly supplied by the trigeminal nerve, which carries most head pain, so this gradient stimulates trigeminal fibers. Second, pressure-sensitive receptors in the head and the trigeminal system detect the change directly. The result is activation of the pain pathway that generates headache. In a healthy brain these signals are minor and filtered out. After concussion, the trigeminal pain system is sensitized and its threshold is lowered, so the same pressure signal is amplified into a headache. This is why barometric sensitivity is more pronounced after injury than before. Why the Falling Pressure Before Storms Is the Strongest Trigger The rate and direction of change matter more than the absolute value. A rapid fall in pressure, as a storm system moves in, produces the largest and fastest gradient across the sinuses and the strongest stimulation of pressure-sensitive fibers. This is why many people reliably develop headache in the hours before a storm arrives, sensing the drop before the weather visibly changes. Slower or smaller pressure changes are less likely to cross the threshold. The pre-storm pressure fall is the classic barometric trigger. Symptom Presentation Headache building in the hours before a storm arrives A sense of pressure or fullness in the head or face Worsening with rapid weather-system changes Sinus-like pressure without infection Headaches during air travel or rapid altitude change Worse when pressure change stacks with other triggers Assessment A clinician confirms the pattern with a headache diary that records timing against weather and pressure changes, distinguishing genuine barometric sensitivity from coincidental triggers. Because the pressure-and-fullness quality can mimic sinus headache, the assessment separates true sinus disease, which involves infection and other sinus symptoms, from a migraine or post-traumatic headache triggered by pressure change, since most self-diagnosed sinus headaches are migraine. Identifying the underlying phenotype guides treatment. Treatment Approach Because barometric pressure cannot be controlled, treatment lowers the sensitized threshold and manages the stacking triggers. Treating the underlying phenotype, usually migraine or post-traumatic migraine, with acute and preventive strategies raises the threshold so pressure changes are less able to cross it. As the brain recovers from concussion, trigeminal sensitization decreases and barometric sensitivity generally lessens. Managing the controllable triggers that stack with pressure keeps the total load down. Consistent sleep, steady hydration, regular meals, and stress regulation cushion the effect of a pressure drop. On days when a pressure fall is forecast, protecting these basics and treating early at the first sign of headache helps, since early acute treatment works better than late. Diaphragmatic breathing supports autonomic regulation, and addressing the cervical contribution removes one more input feeding the headache. Avoiding medication overuse protects the threshold. 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 Mistaking a pressure-triggered migraine for sinus infection and treating it with antibiotics Ignoring the controllable triggers that stack with pressure changes Not treating early at the first sign of a pressure-triggered headache Overlooking the underlying migraine phenotype driving the sensitivity Allowing medication overuse that lowers the threshold further Progression A diary confirms the barometric pattern and separates it from sinus disease and coincidental triggers. Treatment lowers the threshold by managing the underlying phenotype and removing stacking triggers, with early acute treatment on forecast days. Autonomic regulation and cervical care support the plan. Barometric sensitivity generally lessens as trigeminal sensitization settles with recovery. How does barometric pressure cause a headache? When atmospheric pressure falls, the pressure inside the air-filled sinuses no longer matches the outside, creating a gradient that stimulates trigeminal nerve fibers, and pressure-sensitive receptors detect the change directly. This activates the pain pathway. After concussion the trigeminal system is sensitized, so the signal is amplified into headache. Why do I get a headache before a storm? Barometric pressure falls rapidly as a storm system approaches, producing the largest and fastest pressure gradient across the sinuses and the strongest stimulation of pressure-sensitive fibers. Many people reliably develop headache in the hours before a storm, sensing the drop before the weather visibly changes. Is a barometric headache the same as a sinus headache? Not usually. The pressure-and-fullness quality can feel like a sinus headache, but most self-diagnosed sinus headaches are migraine triggered by pressure change. True sinus headache involves infection and other sinus symptoms. Distinguishing them matters because the treatments differ, and antibiotics do not help a pressure-triggered migraine. Can I prevent barometric pressure headaches? Since pressure cannot be controlled, prevention focuses on lowering the sensitized threshold by treating the underlying headache phenotype and on removing the triggers that stack with pressure, keeping sleep, hydration, and meals consistent. On forecast days, protect these basics and treat early at the first sign of headache. Why does air travel give me a headache after a concussion? Air travel involves rapid cabin pressure changes during ascent and descent, producing the same kind of pressure gradient across the sinuses that a weather front does. In a sensitized post-concussion trigeminal system, this can trigger headache. Staying hydrated, treating early, and managing other triggers help. 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