How Do You Know When a Brain Injury From a Car Crash Is Serious?

 Posted on April 03, 2026 in Car Accidents

Many severe car crashes involve a driver being subjected to violent forces. Even when an accident doesn’t result in visible damage, the victim may be left with lasting brain injuries. What you do in the aftermath of a car accident can help protect your right to compensation. With help from our Winnebago County, IL car accident lawyers, you can pursue payment for your damages.

At Mannarino & Brasfield, A Division of Schwartz Jambois, we have successfully recovered compensation for victims of brain injuries and other catastrophic injuries in the past. Some of these successful results include six- and seven-figure settlements, where we fought hard to safeguard our clients’ rights. We can help you gauge the severity of a brain injury and advise you of your next steps.

What Is a Traumatic Brain Injury?

A traumatic brain injury, often called a TBI, happens when a sudden force damages the brain. In a car crash, that force can happen in several ways. Your head might hit the steering wheel, window, seat, or airbag. Even if your head does not strike anything, your brain can still be hurt when your body jerks violently forward and backward.

Brain injuries can range from mild to severe. A concussion, for example, is one type of TBI. Even a seemingly "mild" brain injury can cause major problems with work, school, sleep, focus, and daily life. Some people recover in weeks. Others deal with symptoms for months or years. In the worst cases, a brain injury can cause permanent disability.

What Are the Symptoms of a Traumatic Brain Injury After a Car Accident?

Brain injury symptoms are not always dramatic at first. That is why it is important to pay attention to how you feel after a crash.

Common symptoms of a traumatic brain injury include:

• Headaches

• Dizziness

• Nausea

• Vomiting

• Blurred vision

• Ringing in the ears

• Unusual tiredness

• Memory loss

• Confusion

More serious symptoms can include slurred speech, trouble walking, loss of balance, seizures, weakness in the arms or legs, repeated vomiting, or passing out. A person with a severe brain injury may seem very sleepy, act strangely, or have trouble answering simple questions.

You should also consider changes that loved ones notice. Maybe you are more irritable than normal. Maybe you forget things you were just told or cannot focus on a short conversation. These subtle changes in functioning or temperament should not be overlooked. 

How Soon Should You See a Doctor After a Car Crash in Illinois?

You should see a doctor as soon as possible after a car crash, no matter what. If nothing else, you want to ensure that you do not have any internal injuries. If you hit your head, lose consciousness, feel confused, or notice any symptoms that could point to a brain injury, those are immediate concerns. Even if your symptoms seem mild, it is better to get checked right away.

Waiting can be dangerous for a brain injury. A delay may let swelling or bleeding get worse. It can also make it harder to connect your injury to the crash later. When you get prompt medical care, you protect both your health and your legal claim.

A doctor may ask about your symptoms, check your memory and balance, and decide whether you need imaging or follow-up care. Sometimes a person is sent home with instructions to rest and return if symptoms get worse. Other times, more testing or treatment is needed right away.

How Much Is a Brain Injury Car Crash Claim Worth in 2026?

The value of a brain injury claim after a car crash can vary significantly. The value of a brain injury claim often depends on the cost of medical care, future treatment needs, lost income, reduced earning ability, pain and suffering, and how much the injury changed your daily life. A person with headaches for a few weeks will usually have a very different claim than someone who now struggles with memory, speech, work, or independence.

The strength of the medical evidence is an important factor. If neurologists, imaging results, therapists, and other records clearly show lasting harm, that can make a major difference. It also matters whether the injured person can still do the same job, handle daily responsibilities, and enjoy the same activities as before.

The severity of the crash and the amount of available insurance can affect the case as well. Illinois law also requires drivers to carry liability insurance, which matters when an injured person seeks compensation after a crash (625 ILCS 5/7-601). Some crashes cause life-changing injuries, but the at-fault driver may not have enough coverage. In those situations, other sources of recovery may need to be explored.

What if the Insurance Company Won’t Pay the Full Value of My Accident Claim in Illinois?

Insurance companies often try to limit what they pay. That is especially common in brain injury cases, because these injuries can be hard to prove to someone who only looks at paper records and photos. An adjuster may argue that you looked fine at the scene, that your symptoms are exaggerated, or that your problems came from something other than the crash.

They may also focus on the fact that you did not lose consciousness. A person can suffer a real and serious brain injury without blacking out. The insurance company may also offer a quick settlement before the full extent of the injury is known. Accepting can be a serious mistake. Once a claim is settled, you usually cannot go back and ask for more money later. If your symptoms get worse or your recovery takes far longer than expected, that early offer may look very small.

When the insurance company refuses to pay full value, our attorneys can gather medical records, work with your doctors, document future losses, negotiate with the insurer, and, if needed, take the case to trial. Sometimes the only way to get fair compensation is to push back hard with strong evidence.

Contact Our Rockford, IL Brain Injury Attorneys Today

A brain injury can affect your health, your job, your family life, and your future. If you are dealing with headaches, memory problems, confusion, mood changes, or other symptoms after a crash, do not assume the problem will simply go away. Serious injuries are often missed in the early days after an accident.

At Mannarino & Brasfield, A Division of Schwartz Jambois, we understand how disruptive a brain injury can be and how difficult insurance companies can make the claims process. We can investigate the crash, review the medical evidence, and fight for compensation that reflects what this injury has truly cost you. Call 815-215-7561 or contact our Winnebago, IL car accident lawyers to schedule a free consultation.