How Is Headache After Concussion Diagnosed and Managed?
Post-traumatic headache (PTH) is diagnosed by classifying the headache phenotype — migrainous, tension-type, cervicogenic, occipital neuralgia, or mixed — because treatment is phenotype-driven. Management combines phenotype-specific therapy (migraine prophylaxis, cervical PT, or nerve-targeted treatment), strict limits on acute analgesic use to prevent medication-overuse headache, and referral to headache specialty care if symptoms persist beyond 4-6 weeks.
Why Phenotype Comes Before Treatment
Headache is one of the most common and, encouragingly, one of the most treatment-responsive symptoms following concussion. But "post-traumatic headache" is not a single entity — it's an umbrella term covering several distinct headache phenotypes that happen to share a traumatic trigger. Treating every post-concussion headache as generic pain, or defaulting every patient to the same medication, is the most common reason PTH becomes prolonged rather than resolving in the expected window.
Guidance from the DoD/VA Traumatic Brain Injury Center of Excellence (TBICoE) and the Ontario Living Concussion Guidelines converge on the same first step: classify before you treat. Practically, that means a directed history (headache location, quality, triggers, associated symptoms, prior headache/migraine history) and exam findings that point toward one or more of the following phenotypes:
- Migrainous PTH — throbbing, often unilateral, with photophobia/phonophobia, nausea, or aura-like features; frequently seen in patients with a personal or family migraine history.
- Tension-type PTH — bilateral, band-like or pressure quality, without the associated migrainous features.
- Cervicogenic headache — originates from the cervical spine, common after a whiplash-mechanism injury; often worsens with neck movement or sustained posture and responds to cervical-directed treatment rather than headache medication alone.
- Occipital neuralgia — sharp, shooting, or electric pain in the occipital distribution, sometimes with scalp tenderness or allodynia.
- Mixed phenotype — features of more than one category, which is common enough in practice that most protocols expect it rather than treat it as diagnostic failure.
First-Line Management by Phenotype
Migrainous PTH. When migrainous headaches are frequent or disabling, standard migraine-preventive approaches are used, selected per patient factors — options commonly referenced include amitriptyline and topiramate, among other standard migraine prophylactic agents. Triptans are used for abortive treatment of individual migrainous episodes, following the same use pattern as primary migraine.
Cervicogenic PTH. Because whiplash mechanisms are common in concussion (motor vehicle collisions, contact-sport impacts), a cervical component is frequent and often under-recognized when the clinical focus stays on "headache" in isolation. A cervical spine exam should be part of the initial and follow-up assessment, and referral to physical therapy for manual therapy and cervical rehabilitation is appropriate when cervicogenic features are present.
Occipital neuralgia and refractory phenotypes. These typically require escalation beyond first-line primary-care management — nerve-targeted interventions and headache-specialist input are more relevant here than standard migraine prophylaxis.
The Medication-Overuse Trap
One of the most important — and most preventable — drivers of "persistent" post-traumatic headache is medication-overuse headache (MOH), caused by frequent use of acute analgesics or NSAIDs to manage the pain. Patients experiencing daily or near-daily headache understandably reach for over-the-counter pain relief repeatedly, which can paradoxically perpetuate the headache cycle. Guideline-consistent practice is to educate patients early — generally limiting acute analgesic use to fewer than 2-3 days per week — rather than waiting for MOH to be suspected only after weeks of an unexplained plateau. This education point belongs in the very first post-injury visit, not as a later correction.
When to Refer to Headache Specialty Care
Refer to a headache specialist or neurology when post-traumatic headache is refractory to first-line management beyond roughly 4-6 weeks. Other reasonable triggers for earlier referral include:
- Diagnostic uncertainty about phenotype despite a directed history and exam
- Suspected medication-overuse headache that isn't resolving with acute-medication limits
- A cervicogenic component not responding to a course of targeted physical therapy
- High-frequency or disabling migrainous headache requiring escalation beyond standard first-line prophylaxis
- Any red-flag feature emerging during the headache workup (see below)
Red Flags That Change the Picture
Post-traumatic headache is usually a benign, treatable symptom of concussion recovery — but a new or worsening headache after head injury always warrants a check against red-flag criteria before it's assumed to be routine PTH. Per general concussion red-flag guidance (see the CDC HEADS UP clinical guidance), features that should prompt urgent evaluation and consideration of imaging include:
- Worsening headache rather than a gradually improving one
- Repeated vomiting, seizure, or focal neurologic deficit
- Declining level of consciousness or increasing confusion
- "Worst headache of life" quality
- Signs of basilar skull fracture (raccoon eyes, Battle sign, CSF rhinorrhea/otorrhea)
- Anticoagulant/antiplatelet use, known coagulopathy, or age over 65
Structural imaging (CT acutely) is used to rule out hemorrhage or fracture in these scenarios — it does not diagnose concussion or PTH itself, which are clinical diagnoses made against a background of normal structural imaging.
Where Headache Fits in the Broader Recovery Picture
Headache rarely travels alone. It's worth actively screening for the symptoms that commonly co-occur and can either worsen headache or be worsened by it: sleep disturbance (see sleep dysfunction after concussion), vestibular/dizziness symptoms, and mood symptoms such as anxiety or depression (see screening for depression after TBI). A patient whose headache "won't budge" despite phenotype-appropriate treatment is often dealing with an untreated comorbid driver — poor sleep, unaddressed cervical dysfunction, or an anxiety component — rather than a truly refractory primary headache disorder.
Follow-up cadence generally mirrors standard concussion follow-up: an early visit to establish phenotype and rule out red flags, a check-in around one to two weeks to assess trajectory, and escalation to more frequent visits or specialty referral if headache persists beyond the expected recovery window. See the concussion follow-up schedule and post-concussion recovery timeline for the broader visit-cadence framework this fits into.
How Kavera Handles This
Post-traumatic headache runs in Kavera as a Concussion module patient with HIT-6 added, so headache disability, symptom burden, sleep and mood are tracked on one schedule and medication changes are reviewed against a trend at telehealth follow-up. Self-Serve practices run this with their own staff. On Managed, Juliet Mott's team runs it and bills it under your credentials.