Most concussion headaches improve within a few weeks, but the right combination of rest, activity management, and targeted strategies can make a real difference in how quickly you recover and how intense the pain gets along the way. Headache is the single most common symptom after a concussion, and it can feel like a migraine, a tension headache, or a dull pressure that won’t let up. Here’s what actually helps.
Why Concussions Cause Headaches
Understanding the mechanism helps explain why certain remedies work and others don’t. After a concussion, your brain launches an inflammatory response that increases overall brain excitability and activates pain-sensing nerves in the lining of your brain and along your trigeminal nerve, which runs through your face, jaw, and head. At the same time, your brain’s natural ability to dial down pain signals weakens. You essentially have a pain system stuck in “on” with a broken “off” switch.
This is why concussion headaches often feel like migraines, complete with light sensitivity, nausea, and throbbing. The same chemical messenger involved in migraines (a protein called CGRP) plays a central role in triggering post-concussion headache and can drive the pain from acute to chronic if it leads to lasting changes in how your brain processes pain signals.
The Activity Sweet Spot
The old advice to lie in a dark room for days is outdated. Current guidelines from the CDC recommend an initial period of reduced physical and cognitive exertion, but not prolonged total rest. The goal is to find the level of activity your brain can handle without symptoms flaring.
In practice, this means starting light activities within a day or two, then gradually increasing what you do. If your headache gets worse during an activity, stop and rest. Once you’ve been symptom-free for at least 24 hours, try that same level of activity again. Think of it as a dial you’re slowly turning up rather than a switch you flip back on. Pushing too hard too fast can reignite the headache, but doing too little for too long can actually slow recovery.
Over-the-Counter Pain Relief (With a Catch)
Acetaminophen (Tylenol) and ibuprofen (Motrin) can help take the edge off a concussion headache, but there’s a critical limit: don’t use them more than twice per week. Taking common painkillers more frequently after a concussion can cause medication-overuse headache, where the very drugs you’re using to treat the pain start perpetuating it. This applies to acetaminophen, ibuprofen, combination products like Excedrin, and prescription migraine medications alike.
If you find yourself reaching for painkillers more than twice a week, that’s a signal your current approach isn’t enough and you need a different strategy, not more of the same pill.
Sleep as a Recovery Tool
Poor sleep and concussion headaches feed each other. The headache disrupts your sleep, and the disrupted sleep makes the next day’s headache worse. Breaking this cycle is one of the most effective things you can do.
Go to bed and wake up at the same time every day, even on weekends. Keep your bedroom dark, cool, and free of screens. If you need to nap, keep it to one nap before 3:00 PM and under 30 minutes. Longer or later naps can sabotage your nighttime sleep. Remove phones, tablets, and computers from the bedroom if possible, or at minimum put them in sleep mode. Avoid looking at a lit clock if you wake during the night.
A warm bath or light massage before bed can help signal your body it’s time to wind down. Avoid caffeine and sugar for at least four to six hours before bedtime, and skip alcohol entirely during recovery.
Hydration and Nutrition
Dehydration is a reliable headache trigger even without a concussion, and your recovering brain is more sensitive to it. Aim for at least 80 ounces of water per day, supplemented with low-sugar electrolyte drinks. Start hydrating first thing in the morning and keep it consistent throughout the day rather than trying to catch up in the evening.
Hydrating foods like fruits, vegetables, and broths count toward your total. Avoid drinks with artificial sweeteners or sugar substitutes, which can aggravate symptoms in some people. Eating foods rich in magnesium, iron, and B vitamins supports your body’s natural melatonin production, which circles back to better sleep.
Supplements That May Help
Two supplements have enough evidence behind them to be worth discussing with your provider. Magnesium, commonly used for migraine prevention, is typically taken at 400 mg daily for adults (the range in clinical use is 360 to 600 mg). Riboflavin (vitamin B2) is dosed at 400 mg daily for adults and 200 mg daily for younger children. Both are used as preventive strategies, meaning they’re aimed at reducing the frequency and intensity of headaches over time rather than stopping a headache that’s already started.
Managing Light and Screen Sensitivity
Light sensitivity is one of the most common concussion symptoms, and it directly fuels headaches. Fluorescent lights are particularly problematic because they emit an invisible flicker at specific wavelengths that can aggravate an injured brain.
FL-41 tinted lenses, which have a rose-colored tint, block roughly 80% of the blue light spectrum that triggers the most discomfort. They’re specifically designed for people with concussions, migraines, and other light-sensitive conditions. Unlike regular sunglasses, they’re meant for indoor use and can reduce the impact of both overhead fluorescent lighting and device screens. Wearing dark sunglasses indoors may feel helpful in the moment, but it can actually make your eyes more sensitive to light over time. FL-41 lenses are the better long-term option.
When it comes to screens, let your symptoms guide you. If scrolling on your phone for five minutes brings on or worsens a headache, that’s your current limit. Gradually extend your screen time as tolerance improves.
Physical Therapy for Neck-Related Headaches
Many concussion headaches actually originate in the neck, especially if the injury involved whiplash or a direct blow that strained cervical muscles. These cervicogenic headaches tend to start at the base of the skull and wrap around to the front of the head, and they often get worse with certain neck positions or prolonged sitting.
Physical therapy targeting the neck has strong evidence behind it. Patients who received manual therapy techniques, including work on the jaw and neck, showed significant decreases in headache intensity at both three and six months after starting treatment. Treatment for trigger points in the trapezius, the muscles along the sides of the neck, and the muscles at the temples improved range of motion and reduced headache intensity compared to sham treatment. A comprehensive program typically includes cervical spine exercises, posture correction, balance and coordination exercises, and hands-on manual therapy.
How Long Concussion Headaches Last
Most concussion headaches resolve within a few weeks. When symptoms persist beyond three months, the condition is classified as persistent post-concussive symptoms. These longer-lasting cases typically begin within the first 7 to 10 days after the injury. For most people with persistent symptoms, things improve within a year, though some cases last longer.
The strategies above apply whether your headache is in its first week or its fourth month, but persistent headaches generally need a more structured, multidisciplinary approach combining physical therapy, sleep optimization, and sometimes preventive medications rather than relying on any single remedy.
When a Concussion Headache Is an Emergency
Most concussion headaches, while miserable, are not dangerous. But certain patterns signal something more serious, like bleeding in the brain. Go to the emergency department or call 911 if you experience any of the following after a head injury:
- A headache that keeps getting worse and won’t go away
- Repeated vomiting
- Seizures or shaking
- One pupil larger than the other, or double vision
- Slurred speech, weakness, numbness, or loss of coordination
- Increasing confusion, agitation, or inability to recognize people or places
- Excessive drowsiness or inability to stay awake
For infants and toddlers, the same signs apply, along with inconsolable crying or refusal to eat or nurse.