What Is a Concussion?
A concussion is a mild traumatic brain injury (mTBI) caused by a bump, blow, or jolt to the head or body that causes the brain to move rapidly inside the skull. It is not simply "getting your bell rung." A concussion changes how brain cells function — it is a chemical and metabolic disturbance in the brain, not a structural injury visible on a standard CT scan or MRI. You do not have to lose consciousness to have a concussion — in fact, fewer than 10% of concussions involve loss of consciousness.
Concussions can occur in any sport, from direct head contact in football and soccer heading to floor collisions in volleyball. The brain of a child or adolescent is still developing — particularly the prefrontal cortex, which continues maturing into the mid-20s — and growing brains may be more vulnerable to damage from repeated impacts. This is why recognition, proper management, and a disciplined return-to-play protocol are non-negotiable.
Key Statistic
Concussions account for an estimated 5–10% of all youth sports injuries each season, though many go unreported. High school football has the highest concussion rate of any sport, accounting for nearly half of all sport-related concussions among male high school athletes. A 2017 study in JAMA Pediatrics found youth football players ages 5–14 sustained 231 concussions per 100,000 athlete-exposures.
Recognition: Signs & Symptoms
Every parent, coach, and athlete should learn to recognize the signs (what you observe) and symptoms (what the athlete reports) of a concussion. Recognition is the first and most critical step — an unrecognized or ignored concussion puts the athlete at risk for Second Impact Syndrome and prolonged recovery.
Observable Signs & Reported Symptoms
| Observed Signs (what you see) | Reported Symptoms (what the athlete feels) |
|---|---|
| Appears dazed, stunned, or confused | Headache (the most common symptom — ~85% of cases) |
| Confusion about assignment or position | Confusion or feeling "foggy" |
| Forgets plays, score, or opponent | Nausea or vomiting |
| Moves clumsily or loses balance | Balance problems or dizziness |
| Answers questions slowly | Blurry or double vision |
| Loses consciousness (even briefly) | Sensitivity to light or noise |
| Shows mood, behavior, or personality changes | Feeling sluggish, hazy, groggy, or "not right" |
| Can't recall events before or after the hit | Concentration or memory problems |
| Amnesia for events surrounding the injury | Just "doesn't feel right" |
Symptoms That Require the Emergency Room
Some symptoms signal a more serious brain injury that needs immediate emergency medical attention. Call 911 or go to the ER right away if the athlete shows any of these:
- Loss of consciousness lasting longer than 1 minute (any loss of consciousness warrants prompt evaluation)
- Repeated vomiting (more than once)
- Seizures or convulsions
- Worsening or severe headache that does not improve
- Slurred speech or difficulty speaking
- Weakness, numbness, or tingling in the arms or legs
- Unequal pupil size or unusual eye movements
- Inability to be woken up (drowsiness that progresses to unresponsiveness)
- Increasing confusion, agitation, or restlessness
- Unusual behavior or significant personality changes
CDC HEADS UP Guidelines
The CDC's HEADS UP program is the gold standard for youth concussion education and management. All 50 U.S. states now have concussion laws built around these principles, requiring:
- Immediate removal from play when a concussion is suspected — no exceptions, no "playing through it"
- No return to play the same day as the suspected injury
- Written clearance by a licensed healthcare provider trained in concussion management before the athlete returns to play
- Annual concussion education for coaches, parents, and athletes
The HEADS UP guidelines emphasize that coaches and parents should remove the athlete from play immediately if there is any suspicion of a concussion — when in doubt, sit them out. It is always safer to err on the side of caution. A young athlete who "shakes it off" and returns to play before full recovery risks a prolonged recovery, permanent damage, or death.
Baseline Concussion Testing
Many sports programs and schools now use baseline concussion testing before the season begins. This creates a personalized cognitive "snapshot" of the athlete's normal brain function — memory, reaction time, visual motor speed, and impulse control. If a concussion occurs, doctors can compare post-injury test results against the baseline to make objective, evidence-based return-to-play decisions.
- ImPACT (Immediate Post-Concussion Assessment and Cognitive Testing): The most widely used computerized neurocognitive test. Recommended for athletes age 11 and older (younger brains require modified tools). Baselines should be updated every 1–2 years for developing athletes.
- SCAT5 / SCAT6 (Sport Concussion Assessment Tool): A standardized sideline and clinical screening tool used worldwide. Includes symptom checklist, cognitive assessment, and balance testing.
- VOMS (Vestibular Ocular Motor Screening): Tests eye movement, balance, and visual tracking — systems commonly disrupted by concussion.
Baseline testing is not mandatory, but it is valuable. Ask your program if they offer it; if not, consider arranging it through a sports medicine physician, especially for athletes age 11+ who compete in higher-risk sports (football, soccer, hockey, lacrosse). Baselines provide a meaningful comparison point that subjective symptom reporting alone cannot.
The 6-Step Graduated Return-to-Play Protocol
Following CDC HEADS UP and international consensus guidelines (the Berlin/Zurich consensus), athletes must progress through a graduated 6-step return-to-play protocol. The full protocol takes a minimum of 6 days, with at least 24 hours between each step and a requirement that the athlete be symptom-free at each level before advancing.
| Step | Activity | Goal | Timeline |
|---|---|---|---|
| 1. Symptom-limited activity | Daily activities that do not worsen symptoms (light walking, stationary bike at very low intensity). Begin gentle, symptom-limited activity after 24–48 hours of relative rest. | Gradual reintroduction of activity; promote recovery without provoking symptoms | Day 1+ (min. 24 hrs) |
| 2. Light aerobic exercise | 2A: Light aerobic — stationary bike or walking at ≤70% max heart rate, 5–10 min, increasing to 15 min. No resistance training. | Increased heart rate without symptom return | Day 2+ (24 hrs symptom-free) |
| 3. Sport-specific exercise | Running drills, change of direction, sport-specific movement (e.g., volleyball approach footwork, soccer dribbling, football routes). No head impact, no resistance training. | Add movement complexity and cognitive load | Day 3+ (24 hrs symptom-free) |
| 4. Non-contact training drills | More complex training drills, passing patterns, position work. May begin progressive resistance training. No contact. | Exercise, coordination, increased cognitive load — but still no contact | Day 4+ (24 hrs symptom-free) |
| 5. Full-contact practice | After written medical clearance from a licensed healthcare provider, participate in normal full-contact training to restore confidence and assess functional skills. | Evaluate under real game-like conditions | Day 5+ (after medical clearance) |
| 6. Return to play | Normal full competition and game play. | Full unrestricted return to sport | Day 6+ (minimum) |
Key rule: If symptoms recur at any step — even mild ones like a headache returning — the athlete drops back to the previous asymptomatic step and rests for at least 24 hours before re-attempting that level. This means a real concussion can take weeks, not days to clear. Rushing the protocol increases re-injury risk by 3–5× and raises the likelihood of prolonged post-concussion syndrome.
Cognitive Rest & School Accommodations
Brain rest is just as important as physical rest in the first 24–48 hours. Cognitive rest means limiting activities that require concentration and mental exertion, including:
- Screens: Limit phones, tablets, computers, TV, and video games for the first 24–48 hours. Screen time strains visual and cognitive systems that are trying to heal.
- Schoolwork: A student may need 1–2 days off from school, or a shortened schedule (half-days) upon return.
- School accommodations: Many concussed students benefit from a temporary academic plan that may include extended time on tests, reduced homework load, a quiet testing environment, postponed exams, reduced screen use, and breaks during the day. Inform teachers and the school nurse.
- Reading and texting: Minimize in the acute phase; reintroduce gradually as symptoms allow.
- Loud or busy environments: Avoid concerts, bright gyms, and noisy cafeterias early in recovery.
Symptoms typically resolve within 7–14 days for most youth athletes, but 10–30% experience persistent symptoms (post-concussion syndrome) lasting weeks or months. Athletes with a history of previous concussions, migraines, learning disabilities, or mood disorders are at higher risk for prolonged recovery. If symptoms last beyond 2–4 weeks, seek care from a concussion specialist or sports medicine clinic.
Sport-Specific Concussion Risk
| Sport | Approximate Risk | Common Mechanisms |
|---|---|---|
| Football | 5–10% of injuries each season; highest concussion rate of any high school sport; ~50% of all male sport-related concussions | Helmet-to-helmet contact, tackling collisions, ground impact. Repetitive sub-concussive hits are a separate concern. |
| Soccer | ~4–5 concussions per 10,000 athlete-exposures | Heading duels, aerial collisions, goalkeeper impacts, head-to-head contact. U.S. Soccer bans heading for U10 and below. |
| Volleyball | Lower overall rate, but real — rising awareness | Ball-to-head at close range, head-to-head collisions at the net, head-to-floor contact during dives |
When to See a Doctor
- Any suspected concussion should be evaluated by a physician experienced in concussion management — ideally within 24–48 hours
- Symptoms that worsen over time rather than improve
- Loss of consciousness of any duration
- Seizure or repeated vomiting
- Weakness or numbness in arms or legs
- Unequal pupil size or unusual eye movements
- Symptoms lasting more than 10–14 days (possible post-concussion syndrome — needs specialist evaluation)
- The athlete is not returning to their baseline on follow-up neurocognitive testing
The Bottom Line for Parents
A concussion is a brain injury, not a badge of toughness. When in doubt, sit them out. Remove immediately, seek medical evaluation, follow the 6-step protocol, and never rush the return. The risks of premature return — especially Second Impact Syndrome — are catastrophic and entirely preventable. A child's brain is with them for the rest of their life; one game is not worth permanent damage.
Guidelines based on CDC HEADS UP, the International Consensus Statement on Concussion in Sport (Berlin/Zurich), and the NCAA Sport Science Institute. All 50 U.S. states have concussion laws requiring removal from play and medical clearance before return.