Concussion Symptoms Checklist: Adults, Kids, and When to Seek Emergency Care

Overview

What you will get from this guide is a repeatable way to monitor mild concussion symptoms, recognize signs of concussion in adults and signs of concussion in kids, and know when to go to ER for concussion concerns.

A concussion is a type of brain injury that can happen after a bump, blow, jolt, or sudden movement that causes the brain to move inside the skull. A person does not have to lose consciousness to have a concussion. In fact, many people with a concussion stay awake, talk normally, and seem mostly fine at first. That is one reason a written checklist is useful: symptoms may show up right away, build gradually over several hours, or become more obvious when the person tries to read, work, exercise, or return to school.

Symptoms can affect several areas at once:

• Physical: headache, dizziness, nausea, balance problems, sensitivity to light or noise
• Thinking: slowed thinking, trouble concentrating, confusion, feeling mentally foggy
• Emotional: irritability, anxiety, tearfulness, mood swings
• Sleep: sleeping more than usual, trouble falling asleep, unusual fatigue

Children may not describe symptoms clearly, so parents often have to watch behavior as closely as complaints. A younger child may not say, “I feel foggy,” but may become clingy, unusually quiet, less interested in play, or more upset than expected.

One important point: a concussion checklist helps with observation, not certainty. Symptoms after head injury can overlap with dehydration, stress, neck strain, migraine, or other problems. If the injury involved concerning symptoms from the start, do not rely on home tracking alone. If the person also has symptoms like persistent vomiting, severe trouble breathing, or signs of another urgent problem, that should be assessed promptly. For example, if a person is recovering from an injury and also develops dehydration concerns, our guide to symptoms of dehydration in adults and children may help you separate overlapping issues.

What to track

This section gives you a simple concussion symptoms checklist you can revisit several times a day. The goal is not to score the injury yourself. The goal is to capture patterns: which symptoms are present, whether they are stable or worsening, and whether new red flags appear.

Basic injury details

• Date and time of injury
• How the injury happened
• Whether there was a direct hit to the head or a forceful body impact
• Whether the person briefly blacked out, seemed dazed, or cannot remember the event
• Any alcohol, medication, or sedating substances that may affect symptoms

These details matter because they help a clinician judge the mechanism of injury and whether memory problems or confusion began immediately.

Adult concussion symptom checklist

Common signs of concussion in adults include:

• Headache or pressure in the head
• Dizziness or feeling off balance
• Nausea or vomiting
• Blurred vision or double vision
• Sensitivity to light
• Sensitivity to noise
• Feeling slowed down
• Feeling mentally foggy
• Trouble concentrating
• Trouble remembering new information
• Confusion or difficulty following conversation
• Unusual fatigue
• Drowsiness
• Irritability
• Anxiety
• Sadness or mood changes
• Sleeping more or less than usual

For each symptom, note whether it is absent, mild, moderate, or severe. It can also help to write what makes it worse, such as screen time, reading, busy environments, bright light, driving, or physical activity.

Kid concussion symptom checklist

Common signs of concussion in kids include both physical symptoms and behavior changes. Track:

• Complaints of headache
• Nausea or vomiting
• Dizziness or trouble walking steadily
• Acting dazed, confused, or slower than usual
• Not wanting to play, read, or do normal activities
• More crying than usual
• More irritability or tantrums
• Clinginess
• Looking unusually tired
• Changes in sleep
• Trouble paying attention
• School performance changes
• Sensitivity to light or noise
• Saying they do not feel right

In infants and toddlers, signs can be especially subtle. Watch for poor feeding, unusual sleepiness, repeated vomiting, less interaction, inconsolable crying, or reduced interest in surroundings.

Red-flag emergency symptoms

This is the part of the checklist to treat differently. Do not simply track these and wait if they are happening now. Seek urgent emergency evaluation if a person has:

• Worsening or severe headache
• Repeated vomiting
• Increasing confusion, agitation, or unusual behavior
• Difficulty waking up
• A seizure
• Weakness, numbness, or trouble moving part of the body
• Slurred speech
• One pupil noticeably larger than the other
• Loss of consciousness, especially if prolonged or followed by confusion
• Clear fluid or blood coming from the nose or ears after injury
• Severe neck pain
• Trouble walking that is getting worse
• Any sudden deterioration

If you are wondering when to go to er for concussion, these are the situations where emergency care should not be delayed.

Function changes to track

Symptoms are important, but function often tells you even more. Write down whether the person can:

• Carry on a normal conversation
• Remember recent instructions
• Read for 10 to 15 minutes
• Tolerate screens briefly
• Walk without worsening dizziness
• Eat and drink normally
• Return to schoolwork or desk work for short periods

This kind of practical tracking is often more useful than vague notes like “doing better.”

Cadence and checkpoints

Here is how to use the checklist over time so it remains useful rather than overwhelming.

First 24 hours

In the first day after the injury, check symptoms more often because this is when early changes may become clearer. A simple rhythm is:

• At the time of injury or as soon as possible afterward
• Every 2 to 4 hours while the person is awake for the rest of the day
• Again before bed
• The next morning

You do not need to force someone to stay awake constantly unless a clinician specifically told you to. What matters more is whether they can be awakened, respond appropriately, and do not show red-flag symptoms.

Days 2 to 3

If the person is stable and has no emergency warning signs, shift to a few structured check-ins each day:

• Morning: compare symptoms with the previous evening
• Midday: note tolerance for reading, schoolwork, screens, and light activity
• Evening: check for symptom flare after the day’s demands

This is often when a pattern becomes obvious. Some people improve steadily. Others feel acceptable at rest but worsen with concentration, driving, school, or exercise.

Days 4 to 7

Continue daily tracking if symptoms are still present. Focus less on counting every symptom and more on these checkpoints:

• Is headache becoming less frequent or less intense?
• Is concentration improving?
• Can the person tolerate more normal activity without a setback?
• Are mood and sleep returning toward baseline?
• Are any symptoms newly appearing rather than resolving?

If a child has returned to school, this is the stage when teachers may notice attention or fatigue problems even if the child says little at home.

Weekly follow-up if symptoms linger

If symptoms last beyond several days, move to a once-daily or every-few-days tracker and write down real-world function:

• Hours of school or work tolerated
• Exercise tolerance
• Need for breaks
• Sleep quality
• Headache frequency
• Whether symptoms are improving, plateauing, or worsening

That information can be very helpful if you need follow-up care.

How to interpret changes

This section helps you decide what changes in your checklist may mean and how to respond calmly.

Signs the recovery trend may be favorable

• Symptoms are gradually less intense day by day
• The person can tolerate a little more reading, screen time, or activity without a major setback
• Headache or dizziness is triggered by activity but settles with rest
• Sleep and mood are moving back toward usual patterns

Improvement does not have to be perfectly smooth. A busy day can temporarily increase symptoms. What matters is the overall direction over time.

Signs you should contact a clinician soon

• Symptoms are not improving after a few days
• Headache, nausea, dizziness, or concentration problems are interfering with school, work, or basic activities
• The person cannot tolerate a gradual return to routine
• A child’s behavior or school performance changes noticeably
• Sleep disruption or mood changes are becoming more prominent
• You are unsure whether symptoms are from concussion, neck injury, migraine, dehydration, or something else

When symptoms overlap with other problems, good notes help. For example, headache, fatigue, and dizziness may also be worsened by not drinking enough fluids, poor sleep, or reduced food intake after an injury. If fluid intake has been poor, our water intake calculator guide can help with general hydration planning, though it is not a concussion treatment tool.

Signs the situation may be worsening

• Symptoms are becoming more severe instead of gradually easing
• New neurologic symptoms appear, such as weakness or slurred speech
• The person is harder to wake, more confused, or acting very differently
• Vomiting starts or becomes repeated
• Walking, balance, or coordination is getting worse

Those changes raise concern and should not be treated as routine post-concussion discomfort.

Why children need a lower threshold for reassessment

Children may minimize symptoms because they want to return to play, or they may lack the words to explain what feels wrong. Young children can also appear better at rest but struggle once school, noise, motion, or screen exposure increases. If you notice reduced attention, unusual emotions, frequent naps, or a clear change from the child’s usual personality, it is reasonable to seek follow-up even if the original injury seemed minor.

Return-to-activity caution

One common mistake is treating symptom improvement as full recovery. A person may feel almost normal while sitting quietly but still have symptoms with exertion or concentration. That is why your checklist should include simple activity notes. If a short walk, reading session, homework block, or work meeting causes symptoms to spike sharply, that suggests the brain has not fully returned to its usual tolerance.

Avoid same-day return to sports after a suspected concussion. For athletes, a clinician-guided return-to-play plan is the safer route. For non-athletes, think in terms of graduated return to usual life: quiet activity first, then more mental effort, then more physical effort as tolerated.

When to revisit

Use this guide as a living checklist rather than a one-time read. Revisit it at specific moments so you are making decisions based on patterns, not memory.

Revisit the checklist right away if:

• A new symptom appears
• An existing symptom becomes more intense
• The person tries to return to work, school, exercise, or sports
• A child seems different from usual even without being able to explain why
• You are debating urgent care versus emergency evaluation

Revisit it the next morning after any head injury

Some concussion symptoms are clearer after sleep, especially headache, fogginess, light sensitivity, irritability, and difficulty concentrating. A “looks okay last night” impression is not enough by itself.

Revisit it during the first week

Use the checklist daily until symptoms are clearly improving and the person is tolerating more normal activity. If recovery stalls, your notes become a practical summary for a clinician visit.

Bring your notes to medical care

If you call your doctor, visit urgent care, or go to the emergency department, a short symptom timeline is useful. Bring:

• When the injury happened
• Whether symptoms started immediately or later
• What symptoms are improving
• What symptoms are worsening
• Any vomiting, fainting, seizure, unusual sleepiness, or confusion
• What activities make symptoms flare

This can make the visit more focused and can reduce the chance of forgetting key details. If you want a broader model for organizing symptom discussions before an appointment, our article on shortness of breath causes shows another example of how symptom timing and triggers can guide care decisions.

A simple action plan to save

1. Write down the injury details immediately.
2. Check symptoms every few hours on day one while awake.
3. Track physical, thinking, mood, sleep, and function changes.
4. Do not ignore repeated vomiting, worsening confusion, severe headache, seizure, weakness, or trouble waking.
5. Reduce demanding activity and avoid sports until properly cleared.
6. Seek follow-up if symptoms are not steadily improving or if school, work, or daily function remain affected.

The main value of a concussion checklist is not perfection. It is consistency. Clear notes help you notice trends earlier, support safer recovery decisions, and recognize when a “wait and see” approach is no longer appropriate.