How To Test Someone For A Concussion Key Steps? Key Facts

A concussion is a temporary disturbance in brain function caused by a bump, blow, or jolt to the head or body. You cannot test for it with a scan or a blood test. The key steps are to check for emergency warning signs first, then assess symptoms, memory, balance, and eye function using a structured tool like the SCAT5 or Child SCAT5. Any suspected concussion means the person stops activity and sees a healthcare provider.

Most concussions do not involve losing consciousness. That surprises people. The majority of confirmed cases happen without any blackout at all. So waiting for someone to “get knocked out” is a dangerous way to judge severity.

What Should You Check First Before Testing for a Concussion?

Rule out an emergency before you assess anything else. Some head injuries involve bleeding or swelling in the brain that needs urgent hospital care. These signs can appear right away or develop over the following hours.

Call 911 or get the person to an emergency department if you see any of the following:

• Loss of consciousness of any length
• Seizure or convulsion after the injury
• Repeated vomiting or severe, worsening headache
• One pupil larger than the other
• Clear fluid or blood draining from the nose or ears
• Increasing confusion, agitation, or unusual drowsiness
• Weakness, numbness, or clumsiness in the arms or legs
• Slurred speech or trouble recognizing people or places
• Neck pain or tenderness, especially after a fall or collision

Do not move someone with a suspected neck or spine injury unless they are in immediate danger. Keep them still and wait for emergency services.

How Do You Test Someone for a Concussion on the Sidelines?

Use a standardized tool rather than improvising. Sports medicine organizations use the Sport Concussion Assessment Tool, currently in its fifth edition and known as the SCAT5, along with a version for children aged 5 to 12. These tools were developed through international consensus meetings of concussion specialists.

The SCAT5 is designed for healthcare professionals and trained sideline staff. It is not a substitute for medical evaluation. But its structure shows what a proper assessment covers.

The immediate sideline steps are simple:

• Remove the person from play. No same-day return to the game.
• Check the emergency signs listed above.
• Ask a few memory questions, such as which half it is, which team they played last week, or what happened on the play.
• Check for headache, dizziness, nausea, and sensitivity to light or noise.
• Have a healthcare provider evaluate them the same day if possible.

One clarification worth knowing: the SCAT5 itself states that it should not be used as a stand-alone method to diagnose concussion. It supports a clinical judgment. The diagnosis comes from a trained provider who examines the person and considers how the injury happened.

What Simple Tests Can You Do Without Special Equipment?

A few basic checks can help you decide whether to seek medical care. None of them confirm or rule out a concussion on their own. Think of them as clues, not answers.

Ask memory and orientation questions

Ask the person their name, where they are, what day it is, and what just happened. A person with a concussion may be confused, answer slowly, or not remember the play or the fall. This is called retrograde amnesia, and it is one of the more reliable signs that something is wrong. Asking the same question twice and getting different answers is also a red flag.

Check the eyes

Have the person follow your finger as you move it side to side and up and down. Watch for jerky eye movements, trouble tracking, or complaints of dizziness and headache during the test. Ask them to read a line of text and report whether it feels harder than usual. These are screening observations, not diagnostic tests.

Test balance

Have the person stand with feet together, arms at their sides, and eyes closed for about 20 seconds while you stand close enough to catch them. Then try standing on one leg. Trouble holding steady, swaying, or needing to grab onto something can occur after a concussion. Balance problems have many other causes, so this test is only one piece of the picture.

Check coordination and strength

Ask the person to touch their nose with each index finger, then to squeeze your hands, then to walk a few steps heel to toe. Weakness, clumsiness, or an inability to do these smoothly warrants medical attention.

What Symptoms Should You Watch For in the Hours After?

Concussion symptoms often appear right away, but they can also show up hours later or the next day. Keep watching the person for at least the rest of the day. It is reasonable to check on them through the night, though most guidance no longer requires waking someone every hour if they are sleeping normally and breathing normally.

Common symptoms include:

• Headache or pressure in the head
• Dizziness or problems with balance
• Nausea
• Feeling foggy, slowed down, or having trouble concentrating
• Memory problems
• Blurred or double vision
• Sensitivity to light or noise
• Feeling unusually tired, irritable, sad, or anxious
• Trouble falling asleep or sleeping more than usual

The number of symptoms matters less than whether symptoms are getting worse. A headache that keeps building, increasing confusion, or repeated vomiting means seek emergency care, not watchful waiting.

When Should You See a Doctor After a Suspected Concussion?

See a healthcare provider the same day for any suspected concussion. This is the consistent position across major sports medicine and pediatric guidance. A provider can confirm the diagnosis, rule out more serious injury, and give guidance on returning to normal activity.

Some clinicians use additional tools, such as a brief computerized cognitive test done before the season as a baseline and repeated after injury. The evidence on how much these tests add to a clinical exam is mixed. They are a supplement, not a replacement, for a proper medical assessment. If a school or team offers baseline testing, that is fine, but do not treat a “normal” result as proof the brain is fine.

Imaging is not routinely needed. A CT scan or MRI looks for structural problems like bleeding or a fracture, and a concussion does not show up on either. Imaging is used when there are red flags or a concern for a more serious injury.

What Happens After a Concussion Is Confirmed?

Rest is no longer the standard advice. Current guidance emphasizes relative rest for the first day or two, followed by a gradual return to light activity as symptoms allow. Prolonged strict rest and screen avoidance have not been shown to speed recovery and may actually slow it.

Return to school or work comes before return to sports. The typical path is a stepwise progression: light activity first, then more demanding activity, then full training, then competition. Each step takes at least a day, and any return of symptoms means backing up a step. Most people recover within a few weeks, though a minority have symptoms that last longer. Recovery timelines vary widely, and no test can reliably predict an individual’s course.

Never let someone return to contact sport on the same day as a suspected concussion. This is one of the firmest rules in sports medicine.

What Makes Concussion Testing Different in Children?

Children need a different approach. The Child SCAT5 exists for ages 5 to 12, and the questions and balance tests are adapted for younger kids. Very young children, especially those under 2, cannot describe symptoms, so caregivers must watch for changes in behavior, feeding, and sleep.

For any child with a head injury, the threshold for medical evaluation should be lower than for adults. Seek care if a child has any loss of consciousness, vomiting, unusual sleepiness, or a change in how they act. No clinical guidelines currently exist for self-testing a concussion in infants or toddlers, so professional evaluation is the appropriate step.

What Testing Mistakes Should You Avoid?

Several common beliefs about concussion testing are wrong, and they can lead to missed injuries.

• “They didn’t pass out, so it’s minor.” Loss of consciousness is not required for a concussion and does not predict severity.
• “They seem fine now.” Symptoms can be delayed by hours. A good moment right after the hit means little.
• “They passed the balance test.” No single test rules out a concussion.
• “A helmet prevents concussions.” Helmets reduce the risk of skull fracture and severe brain injury but do not prevent concussion.
• “They can go back in if they feel okay.” Same-day return to play after a suspected concussion is not recommended.

The most reliable approach is the least glamorous one: remove the person from activity, check for emergency signs, watch for symptoms over the next several hours, and have a healthcare provider evaluate them.