Most concussions heal on their own with a short period of rest followed by a gradual return to normal activities. The key is knowing what to do in the first 48 hours, recognizing warning signs that need emergency care, and pacing your recovery so you don’t set yourself back. Here’s a clear walkthrough of each phase.
Know the Emergency Warning Signs First
Before anything else, rule out a more serious brain injury. Go to the emergency room or call 911 if you notice any of these after a head impact:
- Seizures or shaking
- 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 unusual behavior
- Loss of consciousness, inability to wake up, or inability to stay awake
- Not recognizing people or places
For infants and toddlers, the same red flags apply, plus inconsolable crying or refusal to eat or nurse. These signs can appear immediately or develop over the first hours and days, so keep watching.
The First 48 Hours: Relative Rest
The old advice was to lie in a dark room and do nothing until every symptom disappeared. That’s outdated. Current international guidelines recommend “relative rest,” not strict rest, for the first one to two days. That means stepping back from work or school, reducing screen time, and avoiding anything physically or mentally demanding, but still doing light everyday activities like getting dressed, eating meals, and taking short walks around the house.
You may need one to two days off from work or school, but usually not more than that. Complete inactivity beyond the first couple of days doesn’t speed healing and can actually slow recovery.
Sleep
You’ve probably heard you shouldn’t let someone with a concussion fall asleep, or that you need to wake them every few hours. The CDC’s current guidance is simpler: let the person sleep as usual. Keep a consistent bedtime routine. Don’t prevent sleep, and don’t give sleep medications without a doctor’s input. Limit screen time and loud music before bed, sleep in a dark room, and stick to a fixed wake-up schedule. Sleep is when the brain does much of its repair work.
Managing Headaches
For headache pain in the first 48 hours, use acetaminophen (Tylenol). Avoid ibuprofen (Advil, Motrin) during that initial window because it acts as a mild blood thinner, which could worsen bleeding if there happens to be any in the brain. After 48 hours, either acetaminophen or ibuprofen is fine for concussion headaches.
What Recovery Feels Like
Concussion symptoms go beyond headaches. You might experience dizziness, sensitivity to light and noise, fatigue, trouble concentrating, mental fogginess, or feeling “slowed down.” Emotional changes are common too: irritability, anxiety, sadness, or feeling more emotional than usual. Sleep patterns often shift, with some people sleeping more than normal and others struggling to fall asleep at all.
These symptoms typically appear within the first seven to ten days. Most people recover within a few weeks, though children and teens sometimes take longer. If symptoms persist beyond four weeks, clinicians use the term “persisting symptoms.” If they last beyond three months, that’s sometimes called post-concussion syndrome, which can include ongoing headaches, dizziness, poor concentration, ringing in the ears, and mood changes. About 10 to 30 percent of people experience this longer timeline, but it still usually resolves, sometimes over the course of a year.
Easing Back Into Activity
After one to two days of relative rest, start gradually increasing your activity even if you still have mild symptoms. The goal is to do as much as you can tolerate without making symptoms noticeably worse. If a particular activity flares things up, back off and try again the next day at a lower intensity.
Starting light aerobic exercise early, within two to ten days of injury, actually reduces the chance of developing persisting symptoms. Walking and stationary cycling are good starting points. If dizziness, neck pain, or headaches stick around for more than ten days, specialized vestibular and neck rehabilitation can help.
Returning to Sports
Athletes follow a structured six-step progression, based on international concussion guidelines. Each step takes at least 24 hours, and you only move forward if you have no new or worsening symptoms. If symptoms return at any step, stop, rest, and drop back to the previous step once you feel better.
- Step 1: Return to regular daily activities (school, work) with a doctor’s clearance to begin the progression
- Step 2: Light aerobic activity only, such as 5 to 10 minutes on a stationary bike, walking, or light jogging. No weightlifting.
- Step 3: Moderate activity with more head and body movement. Moderate jogging, brief running, lighter-than-usual weightlifting.
- Step 4: Heavy non-contact activity. Sprinting, high-intensity cycling, full weightlifting routine, sport-specific drills without contact.
- Step 5: Full practice with contact, in a controlled setting.
- Step 6: Return to competition.
This progression takes a minimum of six days even in the best case, and many athletes need longer. Rushing back before the brain has healed risks a more severe injury. Returning to contact sports while still symptomatic can cause prolonged recovery or, in rare cases, dangerous brain swelling from a second impact.
Returning to School or Work
Students recovering from a concussion often need short-term adjustments, not weeks off. The CDC recommends a set of specific accommodations that schools can put in place quickly:
- Reducing homework and assignments to essential tasks, with grades based on the adjusted workload
- Extra time on tests, limiting tests to one per day, and providing study guides
- Written instructions and class notes, or permission to record lectures on a phone
- Rest breaks during the day and time to visit the school nurse for headaches
- Extra time between classes to avoid noisy, crowded hallways
- Sunglasses or a seat away from windows if light is bothersome
- A quiet space for studying, testing, or decompressing when feeling overwhelmed
- An identified adult the student can talk to if emotions feel unmanageable
For adults at work, the same principles apply informally. Shorter days, fewer meetings, reduced screen time, and a quieter workspace can make the transition smoother. Increase your workload gradually as symptoms allow.
Eating and Staying Hydrated
Your brain uses extra energy while healing, so nutrition matters more than usual during recovery. Small, frequent meals every two to three hours work better than three large ones, especially if nausea is an issue. Don’t skip breakfast. Good recovery snacks include fruit, smoothies, trail mix with nuts and dark chocolate, and 100 percent fruit juice.
Dehydration is a real risk after a concussion, particularly once you start exercising again or spending time in heat. Offer fluids consistently throughout the day rather than waiting until you feel thirsty. Smoothies, fruits, and vegetables all contribute to your fluid intake beyond what you drink from a glass.
What Slows Recovery Down
A few common mistakes can drag out your recovery. Doing too much too soon is the most frequent one: pushing through worsening symptoms instead of backing off. But doing too little for too long is also a problem. Prolonged strict rest beyond the first couple of days is associated with slower recovery, not faster.
Alcohol should be avoided entirely during recovery. It impairs the brain’s healing process and increases the risk of another injury. Heavy screen use, poor sleep habits, and skipping meals can also make symptoms linger. If your symptoms haven’t improved after four weeks, or if they’re getting worse rather than better at any point, that’s a clear signal to get a more thorough evaluation from a healthcare provider who specializes in concussion management.