Concussions are classified into three grades based on severity: Grade 1 (mild), Grade 2 (moderate), and Grade 3 (severe). The grade is determined by whether you lost consciousness and how long any memory loss lasted after the impact.
Car accidents are one of the most common causes of concussions in Missouri, and the injury does not always show up right away. Many people leave the scene feeling fine, only to develop symptoms hours or days later.
What is a Concussion?
A concussion is a mild traumatic brain injury (TBI) caused when a sudden jolt or impact makes your brain move rapidly inside the skull. This movement stretches and damages brain cells, triggering chemical changes that disrupt normal brain function.
You do not have to hit your head or black out to suffer a concussion. The violent back-and-forth motion from whiplash alone is enough to cause one.
What Are the 3 Grades of Concussions?
Doctors classify concussions into three grades based on two key factors: whether you lost consciousness and how long any memory loss lasted. The grade tells doctors how severe the injury is and helps guide treatment.
| Grade | Loss of Consciousness | Memory Loss Duration | Severity |
| 1 | None | Less than 30 minutes | Mild |
| 2 | Less than 5 minutes | 30 minutes to 24 hours | Moderate |
| 3 | More than 5 minutes | More than 24 hours | Severe |
Grade 1: Mild Concussion
A Grade 1 concussion is the most common type seen after Missouri car accidents. You do not lose consciousness, and any confusion or memory loss clears up within 30 minutes.
Symptoms often include a brief headache, dizziness, or a dazed feeling. Even though it is labeled “mild,” symptoms can still be delayed and should never be ignored.
Grade 2: Moderate Concussion
A Grade 2 concussion involves either a brief loss of consciousness under five minutes or memory loss lasting between 30 minutes and 24 hours. You may experience persistent headaches, nausea, difficulty concentrating, and noticeable balance problems.
This level of injury typically requires a CT scan and careful medical follow-up to rule out more serious damage.
Grade 3: Severe Concussion
A Grade 3 concussion is the most serious type, involving a loss of consciousness lasting more than five minutes or memory loss that extends beyond 24 hours. This injury carries a significantly higher risk of long-term cognitive, emotional, and physical problems.
Grade 3 concussions frequently lead to post-concussion syndrome, a condition where symptoms linger for months or years after the crash.
How Do Doctors Measure Brain Injury Severity?
The three-grade system is one tool doctors use, but your medical records may use different language to describe the injury. Hospitals often rely on the Glasgow Coma Scale (GCS), a 15-point scoring system that measures your eye, verbal, and motor responses right after the injury.
- Mild TBI: GCS score of 13 to 15
- Moderate TBI: GCS score of 9 to 12
- Severe TBI: GCS score of 3 to 8
Your records may say “mild TBI” instead of “Grade 1 concussion,” but they describe the same type of injury. It is important to understand that “mild” does not mean minor. Even a mild TBI can cause serious, lasting symptoms that affect your ability to work and live your normal life.
What Are the Symptoms by Grade?
Concussion symptoms can appear immediately after a crash or be delayed for hours, days, or even weeks. Knowing what to watch for can help you get the right care before symptoms get worse.
Physical Signs
Physical symptoms are usually the first to appear and the easiest to recognize. Common ones include:
- Headaches or a feeling of pressure in the head
- Dizziness or balance problems
- Nausea or vomiting
- Blurred or double vision
- Sensitivity to light or noise
- Ringing in the ears
- Unusual fatigue or feeling slowed down
Cognitive and Mood Changes
A concussion affects how your brain processes information, which can cause changes in thinking and mood that are easy to overlook at first.
- Memory problems: Difficulty remembering the accident or retaining new information
- Brain fog: Trouble concentrating or thinking clearly
- Mood changes: Feeling more irritable, anxious, or emotionally flat than usual
- Personality shifts: Not feeling or acting like yourself around family or coworkers
Red Flags That Require the ER
Some symptoms point to a more dangerous brain injury that needs emergency care right away. Go to the hospital immediately if you notice any of the following:
- Loss of consciousness, even briefly
- Repeated vomiting
- Seizures or convulsions
- Slurred speech or sudden confusion
- One pupil larger than the other
- A severe headache that rapidly gets worse
- Clear fluid or blood from the nose or ears
How Long Does Recovery Take by Grade?
Recovery from a concussion is not the same for everyone, and the timeline depends on the severity of the injury, your age, and your overall health.
- Grade 1: With proper rest, symptoms often improve within 7 to 14 days, though some people take longer.
- Grade 2: Most people recover within three to four weeks, though persistent symptoms may require specialist evaluation.
- Grade 3: Healing can take months, and some people experience permanent effects.
If your symptoms persist, your doctor may diagnose you with post-concussion syndrome (PCS). PCS can interfere with your ability to work, maintain relationships, and enjoy daily life.
Returning to work or driving should depend on whether your symptoms have resolved, not on how much time has passed. Going back too soon can make symptoms worse and extend your recovery.
What Should You Do After a Suspected Concussion in Missouri?
The steps you take immediately after a crash protect both your health and your legal rights. Acting quickly makes a real difference in both your recovery and your claim.
Get Medical Care Right Away
See a doctor as soon as possible, even if your symptoms feel minor. Early medical documentation directly links your concussion to the crash, which is one of the most important pieces of evidence in your case.
Keep a Daily Symptom Journal
Write down your symptoms every day, noting how severe they are and how they affect your routine. This journal can become powerful evidence that shows the real impact of your injury over time.
Be Careful With Insurance Companies
Do not give a recorded statement to the at-fault driver’s insurance company while you are still experiencing brain fog, confusion, or memory issues. Adjusters are trained to find inconsistencies, and even an innocent mistake in your statement can be used to reduce your compensation.
Follow Up With a Specialist
If your symptoms do not improve, ask your doctor for a referral to a neurologist or concussion specialist. Consistent, documented treatment shows the full scope of your injury and strengthens your claim.
How Do Concussion Grades Affect Your Missouri Injury Claim?
The grade of your concussion directly shapes your injury claim. A more severe injury means more medical treatment, more time off work, and a higher potential case value.
Proving Your Concussion Was Caused by the Crash
Insurance companies often challenge claims involving delayed symptoms, arguing the injury is unrelated to the accident. Your medical records, doctor’s notes, and symptom journal all work together to establish that the crash caused your concussion.
How Your Medical Bills Get Paid
Your bills need to be covered while your case is still being resolved. If you have Medical Payments (MedPay) coverage on your auto policy, it can pay for initial costs regardless of fault. Your health insurance can also be used, or we can arrange for your doctors to treat you under a medical lien, meaning they agree to be paid from your final settlement rather than upfront.
Missouri’s Filing Deadline and Comparative Fault Rule
Missouri gives you five years from the date of the accident to file a personal injury lawsuit. Waiting too long puts your claim at risk, as evidence can disappear and witness memories fade.
Missouri also follows a pure comparative fault rule. This means that even if you were partially responsible for the crash, you can still recover compensation. Your final award is simply reduced by your percentage of fault.
Missouri Car Accident Law Firm
At Beck & Beck Missouri Car Accident Lawyers, we are a family-run firm that focuses on Missouri auto accident law. We know how overwhelming it feels to manage a brain injury while dealing with insurance calls and mounting medical bills. Our attorneys handle every part of your case so you can focus on getting better. You will work directly with an experienced lawyer, not a case manager, and we are available 24 hours a day, seven days a week.
We offer free consultations, and you pay no fees unless we win your case. Contact Beck & Beck Missouri Car Accident Lawyers today to get your questions answered and take the first step toward recovery.
Frequently Asked Questions
Is a Grade 3 Concussion Life Threatening?
It can be. A Grade 3 concussion carries a higher risk of serious complications like brain swelling or bleeding, both of which require immediate emergency treatment.
Can You Get a Concussion Without Hitting Your Head?
Yes. The rapid back-and-forth motion of whiplash during a car accident can cause the brain to strike the inside of the skull without any direct blow to the head.
Does a Normal CT Scan Mean You Do Not Have a Concussion?
No. CT scans and MRIs are designed to detect structural injuries like bleeding, not the microscopic nerve damage that causes concussion symptoms, so a normal result does not rule out a concussion.
How Much Is a Concussion Claim Worth in Missouri?
Case value depends on the severity of your injury, the cost of your medical treatment, how much work you missed, and the long-term effects on your daily life.
Can a Prior Concussion Affect Your Current Claim?
Yes. A history of prior concussions can make you more vulnerable to a severe injury, which may increase the value of your claim and the compensation you are entitled to recover.
