Most concussions heal on their own within two to four weeks with the right balance of rest and gradual activity. Treatment isn’t about medication or procedures. It’s about managing your symptoms day by day, protecting your brain from a second injury, and slowly returning to normal life in a structured way.
When to Go to the Emergency Room
Before thinking about home treatment, you need to rule out something more serious. A concussion is a functional brain injury, meaning the brain’s chemistry is disrupted but there’s no structural damage like bleeding. The danger signs below suggest something beyond a concussion may be happening.
Go to the ER or call 911 if you notice any of these after a head injury:
- Seizures or convulsions
- Repeated vomiting
- A headache that keeps getting worse and won’t go away
- Slurred speech, weakness, numbness, or loss of coordination
- One pupil larger than the other, or double vision
- Increasing confusion, agitation, or inability to recognize people or places
- Loss of consciousness, extreme drowsiness, or inability to stay awake
For infants and toddlers, the same red flags apply, plus inconsolable crying and refusal to eat or nurse. These signs can appear hours after the initial injury, so someone should monitor the person closely for the first 24 hours.
What’s Actually Happening in Your Brain
A concussion triggers a chemical chain reaction inside your brain cells. The impact causes a sudden shift of charged particles (ions) across cell membranes, flooding cells with calcium and sodium while potassium leaks out. Your brain burns through its energy supply trying to restore that balance, entering a state where it demands far more fuel than normal.
At the same time, blood flow to the brain can drop significantly, starving cells of the oxygen and glucose they need. This mismatch between high energy demand and low energy supply is the core of why you feel so terrible after a concussion: your brain is working overtime just to maintain basic function. It also explains why rest matters in the early days, and why pushing through symptoms can make things worse. The good news is that this metabolic crisis is temporary, and the brain gradually restores its normal chemistry.
The First 48 Hours
Older concussion advice called for lying in a dark room for days. That’s no longer recommended. Current guidelines call for limiting physically and mentally demanding activities for the first one to two days, including reducing screen time. But complete isolation in a dark room can actually slow recovery by increasing anxiety and deconditioning your body.
During this initial window, keep things low-key but not extreme. Light walking is fine and even encouraged. Stay connected with family and friends. Sleep when you’re tired, but don’t force yourself to stay in bed all day. The goal is to reduce the load on your brain without withdrawing from life entirely.
Managing Pain and Symptoms
Headaches are the most common concussion symptom, and acetaminophen (Tylenol) is the safest option for pain relief. Avoid ibuprofen (Advil, Motrin) and aspirin, as these can increase the risk of bleeding. This is especially important in the early days when a healthcare provider may still be monitoring for any signs of intracranial bleeding.
Beyond headaches, you may deal with dizziness, difficulty concentrating, light and noise sensitivity, irritability, sleep disruption, and fatigue. These symptoms tend to fluctuate, with some days better than others. Bright lights and loud environments can make things worse, so adjusting your surroundings helps. Wear sunglasses if light bothers you. Choose quieter settings when possible. Keep mentally demanding tasks short and take breaks.
Starting Light Exercise Early
One of the biggest shifts in concussion treatment over the past decade is the move away from strict rest until all symptoms disappear. Prolonged inactivity can actually worsen symptoms by deconditioning your cardiovascular system and increasing feelings of depression and anxiety.
Light aerobic exercise below the level that worsens your symptoms has been shown to improve recovery. The most studied approach involves about 20 minutes of activity at a moderate pace, five to six days per week, keeping your heart rate below the point where symptoms flare up. This might mean walking, using a stationary bike, or light jogging. No adverse events have been documented with this approach in research studies. If your symptoms get noticeably worse during activity, scale back temporarily, but don’t stop moving altogether.
Returning to School or Work
Cognitive activity, like physical activity, should be reintroduced gradually. For students, this means short-term adjustments rather than staying home indefinitely. Effective accommodations target the specific symptoms a student is experiencing:
- Thinking and memory issues: Reduced homework focused on key tasks only, extra time on assignments and tests, limiting tests to one per day, access to class notes or permission to record lectures
- Light sensitivity: Permission to wear sunglasses indoors, seating away from windows or bright lights
- Noise sensitivity: A quiet space for studying, testing, or breaks during lunch and recess
- Fatigue and sleep problems: Flexible scheduling, rest breaks during the day
As symptoms improve, these accommodations should be gradually removed. The same principles apply to adults returning to work: start with shorter days or lighter tasks, and build back to your full workload over days or weeks as your brain tolerates more.
The Six-Step Return to Sports
Athletes need a structured, step-by-step progression before returning to competition. Each step should take at least 24 hours, and you only move forward if you remain symptom-free at the current level. If symptoms return, drop back to the previous step.
- Step 1: Return to regular daily activities like school or work, with clearance from a healthcare provider to begin the progression
- Step 2: Light aerobic activity only, such as 5 to 10 minutes of walking, light jogging, or stationary biking. No weightlifting
- Step 3: Moderate activity that increases heart rate with body and head movement. Moderate jogging, brief running, moderate-intensity weightlifting with reduced weight or duration
- Step 4: Heavy non-contact activity, including sprinting, high-intensity biking, full weightlifting routine, and sport-specific drills without contact
- Step 5: Full practice with contact, in a controlled setting
- Step 6: Return to competition
Rushing this progression is one of the most dangerous things you can do. A second concussion before the first has healed can cause far more severe brain injury.
When Symptoms Don’t Go Away
Most people recover within two to four weeks. When symptoms persist beyond a month, it’s generally considered persistent post-concussive symptoms. The most common lingering problems are headaches, dizziness, fatigue, irritability, insomnia, difficulty concentrating, memory problems, and intolerance of stress or strong emotions.
A formal diagnosis typically requires a history of head injury plus at least three of those symptoms continuing past their expected resolution window. Some clinicians use a one-month cutoff, while others define it as six months or longer. The distinction matters less than getting appropriate care if your symptoms aren’t improving.
For persistent symptoms, structured aerobic exercise below the symptom threshold remains one of the best-supported treatments. Vestibular therapy (for balance and dizziness issues), vision therapy, and cognitive behavioral therapy for associated mood changes can also help. The key is that persistent symptoms are treatable, not something you simply have to wait out.
What Not to Do
A few common mistakes can slow your recovery or put you at risk. Don’t drink alcohol while recovering, as it affects the same brain processes your brain is trying to repair. Don’t return to contact sports or high-risk activities before completing the full return-to-play progression. Don’t take ibuprofen or aspirin for pain in the early days. And don’t assume that feeling better for a few hours means you’re fully healed. Symptoms often come and go, and a symptom-free afternoon doesn’t mean your brain has completed its recovery.
Sleep is one of the most powerful recovery tools available to you. Maintain a consistent sleep schedule, avoid screens close to bedtime, and don’t set alarms to wake yourself up during the night unless a healthcare provider has specifically instructed you to do so in the first 24 hours for monitoring purposes.