Most post-concussion headaches resolve within a few weeks, but the timeline varies widely. In children, the median duration is about 7 weeks. In adults, around 37% still report headaches at 6 months, and more than 25% still have them at 12 months after injury. Your own recovery depends on several factors, including the severity of the impact, your sex, and whether you had pre-existing conditions like anxiety, depression, or sleep problems.
The First Three Months
A post-concussion headache typically starts within 7 days of the injury, or within 7 days of regaining consciousness if you were knocked out. For the first three months, it’s classified as an acute post-traumatic headache. During this window, most people see steady improvement. In one pediatric study, about 83% of children with post-traumatic headaches recovered within three months, with a median resolution time of 7 weeks.
The headache itself usually feels like a migraine, a tension headache, or a combination of both. Most people experience migraine-like symptoms: throbbing pain, sensitivity to light and sound, nausea, and dizziness. Around 4 months post-injury, about 40% of people with ongoing headaches report a mix of migraine and tension-type pain, while another 36% have purely migraine-like symptoms. This matters because understanding what type of headache you’re dealing with helps guide treatment.
When Headaches Become Persistent
If your headache continues past the 3-month mark, it’s considered persistent post-traumatic headache. This isn’t rare. A large study tracking brain injury patients found that nearly 30% still reported headache problems a full year after their injury. Adults tend to fare worse than children on this front. Research on adult populations suggests that up to 58% continue having headaches a year later, while the rate in children is estimated between 8% and 12% at the one-year mark.
People with persistent headaches often report 15 to 30 headache days per month, which can significantly affect work, school, and daily life. These aren’t just lingering mild aches. They frequently have the full character of migraines, complete with light sensitivity and nausea.
Why Concussions Cause Headaches
The impact that causes a concussion triggers an immediate chemical disruption in your brain cells. Potassium floods out of cells while sodium and calcium rush in, creating an energy crisis. Your brain suddenly needs far more fuel than normal to restore its chemical balance, but its ability to deliver that fuel is compromised. This mismatch between energy demand and energy supply is what drives the headache, along with the light sensitivity, sound sensitivity, and mental fog that come with it.
This process closely mirrors what happens during a migraine, which is why post-concussion headaches so often feel like migraines. The ionic disruption spreads across the brain in a wave pattern that neurologists call “spreading depression,” originally described in the context of migraine research. It’s not that a concussion gives you migraines. It’s that the underlying brain chemistry is strikingly similar.
Factors That Slow Recovery
Not everyone recovers on the same timeline, and research has identified clear patterns in who takes longer. The strongest predictor of prolonged symptoms is a pre-existing history of anxiety, depression, or sleep disorders. People with these conditions are roughly 2.5 times more likely to have symptoms that persist across all recovery stages, and nearly 3 times more likely to still have problems at the 3-month mark.
Being female also increases the odds of a longer recovery. Women are about 70% more likely than men to develop persistent symptoms overall, and roughly twice as likely at the 3-month point. A prior history of migraines, younger age in adults, and having had previous concussions are also associated with slower recovery, though pre-existing mental health conditions and sex carry the strongest statistical weight.
Managing the Pain
Treatment depends on what type of headache pattern yours most resembles. If your headaches have migraine-like features, migraine-directed treatments tend to work best. For acute pain in the first days after injury, alternating ibuprofen and acetaminophen on a schedule, started within 48 hours, has the best evidence for reducing headache frequency and intensity over the first week.
One important caution: using pain medication too frequently can actually make headaches worse. This is called medication overuse headache, or rebound headache. The pain relievers that are supposed to help start losing effectiveness with overuse, and as each dose wears off, the headache returns, prompting you to take more medication. The cycle is common enough after concussions that it deserves awareness early in recovery.
For headaches that persist, non-drug approaches have solid evidence behind them. Light aerobic exercise that doesn’t risk another head injury (think walking, stationary cycling) helps many people. Physical therapy targeting the neck and balance system can address headaches that have a cervical spine component. Biofeedback therapy, where you learn to control stress responses that amplify pain, has also shown benefit. If preventive medication becomes necessary, doctors typically choose from drugs originally developed for other conditions, selected based on whether your headache pattern looks more like migraine or tension-type.
Warning Signs of Something Worse
A steady or slowly improving headache after a concussion is expected. A headache that keeps getting worse and won’t go away is not. The CDC lists this as a danger sign that warrants emergency care, along with repeated vomiting, seizures, increasing confusion or agitation, slurred speech, weakness or numbness, one pupil larger than the other, double vision, inability to stay awake, or not recognizing familiar people and places. In infants and toddlers, inconsolable crying and refusal to eat are additional red flags. These symptoms can indicate bleeding or swelling in the brain, which requires immediate evaluation.
Children vs. Adults
Children generally recover from post-concussion headaches faster than adults. The median recovery time in pediatric studies is around 7 weeks, and only about 17% of children develop the persistent form lasting beyond 3 months. By one year, somewhere between 8% and 12% of children still have headaches, compared to potentially more than half of adults. The reasons for this difference aren’t fully understood, but the developing brain appears to have some recovery advantages despite also being more vulnerable to initial injury. That said, adolescents and young adults who do develop persistent headaches often report high headache frequency, sometimes more than half the days in a month.