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⚠️ If you have severe symptoms after a head injury — worsening headache, repeated vomiting, slurred speech, seizures, or one pupil larger than the other — call 911 immediately. Do not take this test first.
A concussion is a mild traumatic brain injury that occurs when an impact or sudden jolt causes the brain to move rapidly inside the skull. Symptoms are not always immediate — many people feel fine at first, only to notice changes in the hours or days that follow.
If you're asking yourself "do I have a concussion?", this free online concussion test can help. It walks you through symptom questions covering headache, dizziness, memory, balance, and mood, then gives clear guidance on what to do next. It takes under 2 minutes.
Built on more than 35 years of clinical experience at Moore MyoWorx in Guelph, Ontario, Canada.
Concussion symptoms fall into four categories — physical, cognitive, emotional, and sleep-related. They can start immediately after a head injury or take hours to days to appear, which is why a quick self-assessment within 24 hours matters even if you feel fine.
In children under 12, concussion symptoms can be harder to spot. Watch for: persistent crying, unusual irritability, changes in eating or sleeping habits, loss of interest in favourite toys or activities, unsteady walking, or refusing to nurse or eat. In teens, look for withdrawal from friends, dropping grades, or sudden changes in behaviour after any head impact — including sports.
Seek emergency care immediately if you or someone you're watching shows any of these signs after a head injury:
These signs can indicate bleeding in the brain and require immediate medical assessment.
If you have any milder symptoms above, take the test at the top of this page. For a full breakdown of what to look for at each stage, visit our concussion symptoms page.
You should take a concussion test as soon as possible after any head injury, even if you feel fine. Symptoms can be delayed by hours or days, and an early self-assessment helps you catch warning signs before they progress.
Take this test if you have experienced:
Take the test even if you didn't lose consciousness — most concussions happen without a blackout (see FAQ below).
Concussions are especially common in Canada among hockey players, cyclists, and seniors who fall on ice. Canadian hospital emergency departments treat an estimated 100,000 concussion patients each year, with youth aged 5-19 accounting for about 40% of those cases (Parachute Canada).
A common guideline used by Canadian concussion clinicians is the 4-hour rule: carefully observe the injured person for at least 4 hours after the impact. Check for worsening symptoms every 30 minutes, keep them awake if drowsy, and do not let them drive. After 4 hours, if no red flag symptoms have appeared, they may sleep — but should be checked again in the morning and over the next 48 hours.
Acting early is especially important for children, teenagers, and anyone with a history of previous concussions: these groups face higher risk of complications and longer recovery if a concussion goes unaddressed.
This online concussion test asks a series of questions about your current symptoms, how severe they are, how long you have been experiencing them, and your age. The questions cover the same symptom categories a clinician would check: headache and pressure, dizziness and balance, memory and focus, light and noise sensitivity, mood changes, and sleep.
Based on your responses, it evaluates the likelihood of a concussion and provides clear guidance on your recommended next steps. The test takes under 2 minutes.
An online concussion test is a self-assessment tool — it helps you recognise potential warning signs and decide whether you need professional evaluation. A concussion is a clinical diagnosis. A person may have a concussion even if a symptom checklist or online quiz comes back "normal."
A proper clinical concussion assessment carried out by a concussion specialist goes far beyond a symptom checklist. A trained clinician will run a combination of:
These results compared together — neurocognitive scores against baselines, balance examination, clinical interview — give a far more complete picture than a symptom checklist alone. If your results raise concern, the right next step is to consult a specialist who can assess you thoroughly and put a personalised concussion treatment plan in place.
You cannot fully diagnose a concussion at home — a concussion is a clinical diagnosis that requires a trained healthcare professional. But you can run a structured symptom check that covers the same categories a clinician would: headache and pressure, dizziness and balance, memory and focus, light and noise sensitivity, mood changes, and sleep.
A reliable at-home concussion check has three parts:
Self-assessment is a starting point, not a substitute for diagnosis. If your symptom check raises concern, or if symptoms persist beyond 24-48 hours, see a concussion specialist. Children, teens, and anyone with previous concussions should be assessed by a clinician regardless of symptom-checklist result.
An online concussion test is roughly as accurate as the symptom checklist a clinician would use during a first assessment — but it's only one piece of the diagnostic picture. Standardised symptom checklists like the Acute Concussion Evaluation (ACE) are an established part of clinical concussion assessment, but they cannot rule out concussion on their own.
There are three reasons no online test is 100% accurate:
Treat the result of this test as guidance, not a diagnosis. The most useful question it answers is: "Should I see a clinician?" — and the safe answer is usually yes after any noteworthy head impact.
Most mild concussions resolve within 10-14 days. Around 10-20% of cases develop into post-concussion syndrome (PCS) — symptoms that persist for weeks or months beyond that typical recovery window.
Common PCS symptoms include:
PCS is treatable, but it gets harder to resolve the longer it's left unaddressed. Common contributing factors include unresolved cervical spine and soft-tissue injuries, vestibular dysfunction, autonomic nervous system dysregulation, and visual processing problems — all of which need targeted hands-on assessment, not just rest.
If your concussion symptoms have lasted more than 14 days, or if you have a history of multiple concussions, learn more about post-concussion syndrome treatment and book a clinical assessment.
If your results suggest you may have a concussion, treat it as a brain injury — not just a "headache." Rest alone is often not enough; without proper assessment and a structured recovery plan, symptoms can persist and turn into post-concussion syndrome.
Most mild concussions improve within 1-2 weeks. If you still have headaches, dizziness, brain fog, light/noise sensitivity, mood changes, or sleep problems beyond 14 days, you may be developing post-concussion syndrome (PCS). PCS is treatable, but it gets harder to resolve the longer it's left unaddressed. The longer the symptoms last, the more important it is to see a specialist trained in concussion treatment rather than waiting it out.
At Moore MyoWorx, we specialise in concussion assessment and rehabilitation with over 35 years of clinical experience. Our team uses a hands-on muscular and neurological approach to address the soft-tissue and nervous-system patterns that drive lingering concussion symptoms, especially in cases where rest alone has not resolved them.
A first assessment includes:
Do not manage a concussion alone. Book an appointment with our team today and take the first step toward a full recovery.
No online concussion test can give a definitive diagnosis — a concussion is a clinical diagnosis made by a healthcare professional. This test is designed to recognise warning signs and help you decide whether you need professional evaluation, not to replace one. If you have severe symptoms — worsening headache, repeated vomiting, loss of consciousness, slurred speech, or seizures — call 911 or go to the nearest ER instead of taking this test.
This test can be used as a general guide for older children and teenagers aged 13+ with adult supervision. For children under 12, use the Concussion Recognition Tool 6 (CRT6) and seek professional evaluation — symptoms in young children are harder to spot and need a clinician's eye. After any head injury in a child, a clinical assessment should be the first step regardless of how mild the symptoms seem.
Take a concussion test as soon as possible after any head injury — including falls, sports collisions, car accidents, whiplash, or any blow to the head. Don't wait even if you feel fine; symptoms can be delayed by hours or days. Earlier assessment leads to faster recovery and fewer complications.
Once you complete the online concussion test, you will receive guidance on your recommended next steps based on your results. If your symptoms suggest a concussion, the most important step is to seek professional care. At Moore MyoWorx, our team specialises in concussion assessment and can help you understand your results and begin a personalised recovery plan.
Yes. More than 90% of concussions happen without any loss of consciousness — blackout is the exception, not the rule (per the CDC's HEADS UP program). A concussion can occur from any impact or jolt that causes the brain to move rapidly inside the skull. If you experienced a head impact and notice headache, dizziness, confusion, light sensitivity, or mood changes, take the test above regardless of whether you blacked out.
You cannot fully test yourself for a concussion at home — a concussion is a clinical diagnosis. But you can run a quick symptom check using a structured online concussion test (like the one above), which goes through the same symptom categories a clinician would: headache, dizziness, balance, memory, light/noise sensitivity, and mood. Also have someone watch you for 4 hours after the impact — this is called the 4-hour rule. If symptoms worsen or red flag signs appear, go to the ER.
The 5 most common signs of a concussion are: (1) headache or pressure in the head, (2) dizziness or balance problems, (3) nausea or vomiting, (4) confusion, slowed thinking, or memory problems (amnesia), and (5) sensitivity to light or noise. Other common signs include blurry vision, ringing in the ears, irritability, and trouble sleeping. Symptoms may appear immediately or take hours to days to develop.
Most mild concussions resolve within 10-14 days. Around 10-20% of cases develop into post-concussion syndrome (PCS), where symptoms persist for weeks or months. The longer symptoms last without treatment, the harder they are to resolve. If symptoms have not improved 2 weeks after the injury, book an assessment with a concussion specialist.
The 4-hour rule is a guideline used by Canadian concussion clinicians: carefully observe the injured person for at least 4 hours after the head impact. Check for worsening symptoms every 30 minutes, keep them awake if drowsy, and do not let them drive. If no red flag symptoms appear in 4 hours, they may sleep — but should be re-checked in the morning and over the next 48 hours.
