Post-Traumatic Headache
Headache is one of the most common symptoms after head injury and mild traumatic brain injury. It can develop after a fall, direct blow, road traffic accident, sports injury or another traumatic event involving the head.
Post-traumatic headache does not have one mandatory pain pattern. In some people it resembles migraine, in others tension-type headache, and in some cases injury to the neck and surrounding muscles also plays an important role.
When is headache considered post-traumatic?
According to the International Classification of Headache Disorders, ICHD-3, headache is attributed to head trauma when it begins in close temporal relationship to the traumatic event.
Headache after injury often occurs together with other symptoms
After mild traumatic brain injury or concussion, headache may be only one of several symptoms.
Physical symptoms
Dizziness, nausea, increased sensitivity to light or sound, balance problems, visual discomfort and fatigue.
Cognitive symptoms
Feeling “foggy”, slowed thinking, difficulty concentrating, reduced attention or memory problems.
Sleep and emotional symptoms
Sleep disturbance, increased fatigue, irritability, anxiety or changes in emotional stability.
Post-traumatic headache often resembles recognised primary headache disorders
The physician assesses not only the relationship to trauma, but also the headache phenotype — which established headache pattern it most closely resembles. This directly affects treatment.
Migraine-like
Moderate or severe pain, sometimes pulsating, with nausea, sensitivity to light and sound and worsening with physical activity.
Tension-type pattern
Pressing, tightening, often bilateral pain, usually less intense and without the typical combination of migraine symptoms.
Cervicogenic component
Headache may occur together with neck pain, restricted neck movement, muscle tenderness and worsening with certain head movements.
Trauma can change an existing headache disorder
Not everyone develops a completely new type of headache after trauma. Some patients already have a long history of migraine, but after the injury their attacks become much more frequent, longer or more severe.
In this situation, the physician needs to determine whether this represents ordinary fluctuation of migraine or whether there is a convincing temporal relationship with the injury.
When there is clear deterioration after trauma, both the pre-existing migraine diagnosis and post-traumatic headache may be clinically relevant.
It helps to compare with the period before the injury
- how many headache days per month occurred before;
- the usual pain intensity;
- which symptoms accompanied attacks;
- which medications were effective;
- what specifically changed after the injury.
When headache requires urgent reassessment
Most people with mild head injury recover without dangerous complications. However, some symptoms require prompt medical assessment rather than a routine appointment.
Seek urgent medical attention if
- the headache is worsening and does not improve;
- new weakness, numbness or coordination problems develop;
- a seizure occurs;
- marked drowsiness develops or the person is difficult to wake;
- speech disturbance or unusual behaviour is worsening;
- repeated vomiting occurs;
- significant confusion develops;
- new marked pupil asymmetry or visual disturbance appears;
- the condition clearly worsens after an initial period of improvement.
The threshold for urgent assessment is also lower in people taking anticoagulants or certain antiplatelet medications, those with a bleeding disorder, those who sustained a significant injury, and older adults.
Which imaging test may be needed after head injury?
CT — primarily for the acute setting
When recent head injury raises concern about clinically significant intracranial injury, head CT is generally the primary imaging test used in the acute setting.
The decision depends on neurological findings, loss of consciousness, amnesia, vomiting, mechanism of injury, age, anticoagulant use and other risk factors.
MRI is not a replacement for emergency CT
MRI is not the standard first test for excluding an acute dangerous traumatic intracranial lesion.
It may be useful later if symptoms persist, the clinical picture is unusual, focal neurological symptoms are present, or another specific diagnostic question needs to be answered.
Why can post-traumatic headache continue for months?
Persistent post-traumatic headache is rarely explained by one mechanism alone. Several factors may interact and maintain symptoms.
Migraine mechanisms
Frequent migraine-like headache may develop after trauma, particularly in a person with a pre-existing tendency to migraine.
Neck-related pain
Head trauma is often accompanied by rapid neck movement, musculoskeletal pain and restricted mobility.
Sleep disturbance
Poor sleep itself reduces pain tolerance and may contribute to frequent headache.
Dizziness and exercise intolerance
Vestibular symptoms and poor tolerance of movement may limit activity and prolong recovery.
Anxiety and emotional stress
This does not mean that the pain is “psychological”. However, anxiety, stress and constant fear of worsening can amplify the perception of pain.
Frequent use of acute medication
If analgesics or other acute headache medications are used too often, they may themselves contribute to headache chronification.
Prolonged complete rest is usually not required after mild TBI
During the first day or two after concussion, relative rest and reduction of activities that clearly worsen symptoms may be appropriate. However, current management does not usually recommend prolonged strict bed rest until every symptom has completely disappeared.
After a short period of rest, a gradual return to normal daily activity and light physical activity is generally encouraged, guided by symptom tolerance.
For example, short walks may be introduced first, with gradual increases in activity.
It is important to avoid
- another blow to the head;
- contact sports until medically cleared;
- activity that causes substantial and prolonged worsening of symptoms;
- driving if significant dizziness, slowed reaction time or visual problems persist.
Post-traumatic headache is treated according to its clinical phenotype
There is no single universal medication specifically “for post-traumatic headache”. Treatment is selected according to the headache pattern, frequency, associated symptoms and other consequences of the injury.
Acute treatment
For episodic pain, acute treatment is selected according to whether the headache resembles migraine, tension-type headache or another phenotype.
Preventive treatment
When headaches become frequent, regular preventive therapy may be appropriate, selected according to migraine-like or other headache characteristics.
Neck rehabilitation
When a cervicogenic component is present, targeted physiotherapy, restoration of mobility and treatment of musculoskeletal dysfunction may be useful.
Vestibular rehabilitation
If dizziness, imbalance or motion-provoked symptoms persist, treatment may need to include a vestibular rehabilitation component.
Sleep and daily routine
Regular sleep, gradual return to activity, regular meals and reasonable pacing can be part of treatment, rather than merely general advice.
Medication-use review
It is important to know how many days per month analgesics, triptans or other acute headache medications are being used.
Simply waiting for symptoms to disappear is not always the best strategy
After mild traumatic brain injury, most people improve gradually. However, in some patients headache, dizziness, reduced tolerance of activity or cognitive symptoms persist for longer.
If there is no improvement, headache becomes more frequent, interferes with work, or requires near-daily use of pain medication, it is useful to reassess the diagnosis and identify specific mechanisms that may be maintaining symptoms.
What needs to be clarified when headache follows an injury?
What exactly happened?
Date, mechanism, direct head impact, acceleration-deceleration, loss of consciousness, amnesia and the first symptoms.
When did the headache begin?
Immediately, several hours later or after a few days, and how it changed after the injury.
What does the headache resemble?
Migraine, tension-type headache, cervicogenic headache or a mixed pattern.
What accompanies the headache?
Dizziness, photophobia, sleep disturbance, visual symptoms, concentration problems, imbalance or emotional symptoms.
Neurological status and the neck
Assessment may include not only the neurological examination, but also the cervical region, coordination, eye movements and vestibular function.
What needs to be treated next?
Whether further investigation is needed, which headache treatment is appropriate, and whether physiotherapy or another form of rehabilitation is indicated.
Keep medical documentation after head injury
Even when an injury initially appears mild, it is useful to keep emergency department records, CT or other imaging results, medical reports and a list of symptoms that developed afterwards.
If headache persists, record headache frequency and severity, medications used, dizziness, sleep disturbance, concentration difficulties and the impact of symptoms on work and everyday activity.
More about headache disorders
Diagnosis of post-traumatic headache with Dr Lidiia Prakhova
Dr Lidiia Prakhova is a specialist neurologist with more than 35 years of clinical experience. Headache, migraine and the differential diagnosis of neurological symptoms are part of her outpatient neurological practice.
When headache develops after trauma, it is important to assess its temporal relationship to the injury, clinical phenotype, associated post-concussion symptoms and whether further investigation is required.
Frequently asked questions about headache after head injury
Can headache persist for a long time after a mild head injury?
Can I still have concussion if my CT scan is normal?
Do I need MRI if headache continues after concussion?
Why does headache after injury sometimes resemble migraine?
Can I exercise after concussion?
Can neck injury cause headache after a road accident?
When should I seek urgent medical care after a head injury?
Can frequent painkiller use maintain post-traumatic headache?
Main medical sources
- Headache Classification Committee of the International Headache Society. The International Classification of Headache Disorders, 3rd edition (ICHD-3). Cephalalgia. 2018;38(1):1–211.
- International Headache Society. 5.1 Acute headache attributed to traumatic injury to the head. ICHD-3.
- International Headache Society. 5.2 Persistent headache attributed to traumatic injury to the head. ICHD-3.
- National Institute for Health and Care Excellence. Head injury: assessment and early management. NICE Guideline NG232. 2023.
- Centers for Disease Control and Prevention. Mild Traumatic Brain Injury and Concussion: Symptoms and Recovery. Updated 2025.
- VA/DoD. Clinical Practice Guideline for the Management and Rehabilitation of Post-Acute Mild Traumatic Brain Injury. 2021.
- Díaz PG, Lehman AB. Phenotype-guided Management of Post-traumatic Headache: An Update on Pathophysiology and Treatment. Curr Pain Headache Rep. 2026;30(1):98. doi:10.1007/s11916-026-01535-y.
After head injury, treatment should target the specific headache mechanism
The nature of the injury, timing of symptoms, headache phenotype, neck involvement, dizziness, sleep, frequency of medication use and neurological examination help determine which treatment and additional investigations are actually needed.
