Concussions in Sport
A cinematic look at head injuries on the field—what they are, how to spot them, and why stepping back can be the most powerful play.
What is a concussion?
A concussion is a type of mild traumatic brain injury caused by a hit, jolt, or rapid movement that makes the brain move inside the skull. This movement can temporarily change the way the brain works, affecting how a person feels, thinks, and reacts—even if they never lose consciousness.
Concussions are usually invisible on standard scans and often happen in seconds, in the middle of the action. That is why recognition, honest reporting, and a safety-first culture around head impacts are so important.
How concussions happen
Concussions can occur in almost any sport or physical activity. They are not limited to dramatic collisions or knockouts. Any impact that causes the head or body to move quickly back and forth can transmit force to the brain.
- Direct blows to the head from collisions, falls, or equipment.
- Body hits that cause whiplash-like motion, even without head contact.
- Falls to the ground or court, especially when unprotected.
- Contact with boards, posts, or goal structures.
- Unseen impacts during plays away from the ball or camera.
Helmets and mouthguards can reduce certain injuries, but no equipment can fully prevent concussions. Technique, rules, and team culture all matter.
Warning signs to watch for
Not everyone with a concussion looks dazed or is knocked out. Symptoms can appear right away or develop over minutes to hours. Trust what the athlete says they feel, and what you see from the sideline.
Physical
- Headache or “pressure” in the head
- Dizziness or balance problems
- Nausea or vomiting
- Blurred or double vision
- Sensitivity to light or noise
Thinking & mood
- Feeling “foggy” or slowed down
- Trouble concentrating or remembering plays
- Confusion about the score, opponent, or game plan
- Irritability, sadness, or anxiety
- Changes in sleep, such as sleeping more or less than usual
Get urgent medical help right away if there is a worsening headache, repeated vomiting, seizure, unusual drowsiness, one pupil larger than the other, slurred speech, weakness or numbness, or if the athlete seems to get more confused or less responsive over time.
Immediate sideline response
When in doubt, sit them out. If a concussion is suspected, the priority is safety, not the scoreboard. Removing an athlete from play protects them from a second impact while the brain is vulnerable.
- Remove from play immediately after any concerning head impact or symptom.
- Do not allow same-day return to the game, practice, or conditioning.
- Check airway, breathing, and neck safety before moving the athlete.
- Monitor closely for changes in behavior, balance, or awareness.
- Arrange prompt medical evaluation by a licensed healthcare professional trained in concussion care.
Return-to-play is a stepwise process
Coming back too quickly after a concussion can make symptoms last longer and increase the risk of further injury. A gradual, supervised progression gives the brain time to heal.
- 1. Rest and symptom monitoring — relative rest from physical and mental strain, following medical guidance.
- 2. Light aerobic activity — such as walking or stationary cycling, if approved and symptoms stay stable.
- 3. Sport-specific exercise — running drills or non-contact skills, under supervision.
- 4. Non-contact training — more complex drills, strength work, and playbook review.
- 5. Full-contact practice — only after medical clearance.
- 6. Return to competition — once all steps are completed without symptoms returning.
Timing and details of each step vary by athlete, age, sport, and local guidelines. Follow the plan provided by your healthcare team and governing body.
Reducing concussion risk
No sport can be made completely risk-free, but intentional choices by leagues, schools, coaches, parents, and athletes can lower the chance and impact of concussions.
- Emphasize safe techniques for tackling, checking, and contact.
- Limit full-contact drills, especially for younger athletes.
- Use well-fitted, sport-appropriate gear, and check it regularly.
- Teach athletes to report symptoms without fear of losing playing time.
- Establish clear protocols for head impacts and return-to-play.
- Create a culture where health comes before highlights.
Make the safe call
If you suspect a concussion, choose caution. Remove the athlete from play, arrange appropriate medical evaluation, and follow the guidance you receive. A single game is never worth a lifetime of symptoms.
This page is for general education only and is not a substitute for professional medical evaluation, diagnosis, or treatment. Always follow the advice of a qualified health professional and your sport’s governing rules.
