A post-traumatic headache is a headache that develops within seven days of a head injury, a concussion, or regaining consciousness after one. It’s one of the most common symptoms following a blow to the head, and it can persist for months or even longer. While many post-traumatic headaches resolve on their own within weeks, roughly 15 to 20 percent of people who experience a concussion still have chronic headaches a full year after the injury.
How Post-Traumatic Headache Is Defined
The International Headache Society sets the formal criteria. To qualify as a post-traumatic headache, the pain must begin within seven days of the injury, within seven days of regaining consciousness, or within seven days of recovering the ability to sense and report pain. That seven-day window is the key diagnostic marker.
From there, the headache falls into one of two categories based on how long it lasts. If it resolves within three months of onset, it’s classified as acute. If it continues beyond three months, it’s considered persistent (sometimes called chronic post-traumatic headache). That three-month line matters because persistent cases often require a different, more sustained approach to treatment.
What It Feels Like
Post-traumatic headaches don’t have a single, signature pain pattern. Instead, they tend to mimic other well-known headache types. Most commonly, they feel like either a migraine or a tension-type headache.
When the headache resembles a migraine, you might experience throbbing pain on one side of the head, sensitivity to light and sound, nausea, or visual disturbances. When it resembles a tension-type headache, the pain is more of a steady, pressing tightness on both sides of the head, sometimes extending into the neck. Some people experience features of both. The fact that the headache was triggered by an injury rather than occurring spontaneously is what distinguishes it from a standard migraine or tension headache, even though the day-to-day experience can feel identical.
What Happens in the Brain After Injury
A head injury sets off a chain reaction in the nervous system. The impact damages nerve fibers, and the body’s inflammatory response to that tissue damage activates pain-signaling pathways in the head and face. One of the central players is a signaling molecule called CGRP, which is found throughout the central and peripheral nervous systems. When nerves are damaged, the body ramps up production of CGRP, and this molecule helps drive the pain cascade.
CGRP activates and sensitizes the pain-processing neurons that run from the face and scalp into the brainstem. Once those neurons become sensitized, they react more strongly to stimuli that wouldn’t normally cause pain. This is why, after a concussion, ordinary things like bright lights, loud sounds, or even mild physical exertion can trigger or worsen a headache. In some people, this sensitization becomes self-reinforcing: the longer it persists, the more vulnerable the brain becomes to headache triggers, which can push an acute headache into chronic territory.
Who Is Most at Risk
Not everyone who hits their head develops a lasting headache. A large study tracking civilians after mild traumatic brain injury (the TRACK-TBI study) identified three consistent risk factors for developing persistent post-traumatic headache: being female, having fewer years of formal education, and having a personal history of migraine. If you already had migraines before your injury, your brain’s pain-processing pathways were already primed for sensitization, making it more likely that trauma will trigger a headache that sticks around.
It’s also worth noting that the severity of the initial injury doesn’t always predict the severity of the headache. Mild concussions can produce stubborn, long-lasting headaches, while more severe brain injuries don’t always lead to worse head pain. The relationship between impact force and headache outcome is not straightforward.
The Recovery Timeline
Most post-traumatic headaches improve gradually over the first few weeks to months. By the three-month mark, a majority of people see significant relief or complete resolution. For the 15 to 20 percent who still have headaches at one year, the condition has typically settled into a pattern that resembles chronic migraine or chronic tension-type headache, and it requires ongoing management rather than a wait-and-see approach.
There’s no single moment where recovery “should” happen. Some people feel better in two weeks, others take six months. The trajectory matters more than any single data point. If your headaches are gradually becoming less frequent and less intense, that’s a good sign even if the process feels slow.
Medication-Based Treatment
Because post-traumatic headaches mimic migraine or tension-type patterns, treatment follows those same playbooks. There are two categories: medications to stop a headache once it starts (abortive) and medications taken regularly to reduce how often headaches occur (preventive).
For Acute Headache Relief
For mild to moderate pain, over-the-counter options like ibuprofen, naproxen, acetaminophen, or aspirin are first-line choices. Combination tablets containing acetaminophen, aspirin, and caffeine can also be effective. One important caution: using these pain relievers too frequently (generally more than two to three days per week) can lead to medication-overuse headache, which actually makes the problem worse over time.
For moderate to severe migraine-like pain that doesn’t respond to basic pain relievers, triptans are the next step. These are prescription medications specifically designed to interrupt migraine-type pain pathways. They come in pill, nasal spray, and injectable forms.
For Prevention
If headaches are frequent enough to disrupt daily life, a preventive medication may be worth discussing with your provider. The options span several drug classes, each borrowed from other areas of medicine. Beta-blockers, certain antidepressants, and anti-seizure medications have all shown benefit for reducing headache frequency. Some people respond to supplements like magnesium (400 mg daily), vitamin B2 (400 mg daily), or coenzyme Q10, which carry fewer side effects than prescription options and can be tried alongside other treatments.
Preventive medications typically take several weeks to reach full effect, and finding the right one often involves some trial and error. The choice usually depends on which headache type yours most closely resembles and whether you have other symptoms, like difficulty sleeping or mood changes, that a particular medication might also address.
Non-Drug Approaches
Medication is only part of the picture. A range of non-drug therapies are used for post-traumatic headache, including physical therapy (especially for neck-related pain contributions), cognitive behavioral therapy, exercise programs, and nerve block procedures. A review by the International Association for the Study of Pain identified 21 distinct non-drug treatments currently used for this condition.
The evidence base for most of these is still building, with much of it coming from smaller studies rather than large clinical trials. That said, physical therapy targeting the neck and upper back has strong practical support, particularly when headaches are accompanied by neck stiffness or pain that worsens with certain head positions. Gradually returning to aerobic exercise, at a level that doesn’t worsen symptoms, is also widely recommended and appears to support recovery rather than delay it.
Many treatment plans combine medication with one or more of these approaches. A headache that has persisted beyond three months is unlikely to respond fully to a single intervention, so layering strategies tends to produce better results than relying on any one treatment alone.