Brain Stem Injuries From Car Accidents: What Causes Them and What to Do?

A brain stem injury is one of the most serious outcomes a person can suffer in a car crash. The brain stem controls the body’s most basic functions, breathing, heart rate, consciousness, so an injury there can change a person’s life in an instant and place enormous strain on the family around them.

If you or someone you love suffered a brain stem injury in a Missouri or Illinois crash, understanding how it happened, what to watch for, and what a claim involves can help you make clear decisions at a very hard time. Here is a plain-language guide.

What Is a Brain Stem Injury?

The brain stem sits at the base of the brain, where it connects to the spinal cord. It runs the automatic systems you never think about: breathing, heart rate, blood pressure, swallowing, and your level of consciousness. Because it controls so much, even a small injury there can have outsized effects, and a severe one can be catastrophic or fatal. That is why brain stem injuries are treated as some of the most serious injuries in any car accident case.

What Causes a Brain Stem Injury in a Car Accident?

Most brain stem injuries in crashes come from sudden, violent force that makes the brain move inside the skull. This is common in high-speed collisions, rear-end crashes, and severe side-impact or rollover accidents. The main mechanisms include:

• Direct impact. A forceful blow to the head, especially the back of the head, can directly injure the brain stem.
• Whiplash. The rapid back-and-forth snapping of the head, common in rear-end collisions, can cause the brain to strike the inside of the skull and damage the brain stem.
• Deceleration injuries. When a vehicle stops suddenly, the brain keeps moving, creating shearing forces that can tear and injure the brain stem.
• Penetrating injuries. An object that pierces the skull during a crash can harm the brain stem directly.
• Being unbelted. Occupants without a seat belt face a much higher risk, because they are more likely to be thrown violently or ejected, which raises the chance of brain stem trauma.
• Rollover and side-impact crashes. These collisions, especially at high speed and for unrestrained occupants, are strongly linked to a higher risk of brain stem injury.

Motorcycle crashes also frequently cause brain stem injuries, because riders have far less protection and the neck can be forced into extreme flexion or twisting.

How Does Crash Severity Affect the Risk?

The force of the crash is one of the biggest factors. Research has found that as crash severity rises, especially at higher speeds, the likelihood of a brain stem injury climbs sharply. In crashes with a change in velocity greater than about 45 miles per hour, studies have put the risk of brain stem injury at more than 3.5 percent. Severe impacts tend to snap the head violently or drive it into vehicle structures, producing the direct trauma and rapid acceleration and deceleration forces that damage the brain stem.

Seat belt use matters here too. Unbelted occupants in high-severity crashes face much greater risk, particularly in rollovers and rear impacts. Even modern safety systems can be overwhelmed in an extremely violent collision, leaving an occupant with multiple serious injuries, including brain stem trauma.

What Are the Symptoms and Effects?

Because the brain stem runs vital systems, the effects can be severe and wide-ranging. They may include:

• Loss of motor function or paralysis
• Irregular breathing or heart rate
• Difficulty swallowing or speaking
• Cognitive and sensory impairment
• Coma, or “locked-in syndrome,” where a person is conscious but unable to move anything except, in some cases, their eyes

First warning signs after a crash can include loss of consciousness, trouble breathing, slurred speech, loss of coordination, or sudden weakness or paralysis. These injuries often require long-term rehabilitation and can leave a person with permanent disabilities, which reshapes daily life and brings heavy emotional and financial strain on the whole family.

How Is a Brain Stem Injury Diagnosed and Treated?

Diagnosis can be difficult, because symptoms are sometimes subtle or delayed. Doctors commonly use CT scans and MRIs, but microscopic damage can be missed on standard imaging. Treatment usually involves intensive medical care, followed by rehabilitation therapies, and in serious cases, lifelong support for basic daily needs. Early medical attention gives the best chance at recovery, which is one more reason to get checked out promptly after any serious crash, even if symptoms are not obvious at first.

What Compensation Can You Seek After a Brain Stem Injury?

When another party’s negligence caused the crash, a person injured in Missouri or Illinois may be able to pursue compensation for categories of harm that can include current and future medical expenses, lost wages and diminished earning capacity, pain and suffering, emotional distress, and the long-term care and rehabilitation these injuries so often require. Because brain stem injuries are among the most serious, these are usually catastrophic injury claims, where the future cost of care can be substantial. No one can promise a dollar figure, since the value of any claim depends on its specific facts and evidence.

Proving liability is central to one of these cases. Experienced lawyers can gather the crash and medical evidence, work with treating doctors and other professionals to document the full extent of the injury, and build the case needed to pursue the full value of the claim.

Frequently Asked Questions

What are the first signs of a brain stem injury after a crash?

Warning signs can include loss of consciousness, difficulty breathing, slurred speech, loss of coordination, or sudden paralysis. Because symptoms can be delayed, get medical care promptly even if you feel okay at first.

Can symptoms appear days after the accident?

Yes. Delayed symptoms are common with brain injuries. Always seek medical attention after a serious crash, and follow up quickly if new symptoms appear in the days afterward.

Why are brain stem injuries considered so serious?

The brain stem controls breathing, heart rate, and consciousness, so an injury there can affect the body’s most basic functions and often leads to long-term or permanent disability.

How can a lawyer help with a brain stem injury case?

A lawyer can investigate the crash, collect medical and accident evidence, bring in medical and economic professionals, and deal with the insurers or pursue litigation to seek the compensation your family needs.

Who can file a claim if the injury left my family member unable to act for themselves?

A legal representative can often pursue a claim on behalf of an incapacitated person, and if a brain stem injury causes death, the family may have a wrongful death claim. A lawyer can explain the options for your situation.

 

Award-Winning Accident Lawyer Recognized for Excellence in Missouri

At Mutrux Firm Injury Lawyers, the results we achieve are reflected in the experiences of our clients and the recognition we have received in the community.

Tyson Mutrux is licensed to practice in Missouri, Illinois, and U.S. Federal Courts. He takes every case seriously, representing individuals in serious injury claims with precision and care.

Before Tyson Mutrux became one of Missouri’s most effective personal injury lawyers, he served in the U.S. Army as a Non-Commissioned Officer. He graduated with distinction from the Non-Commissioned Officers Academy and received the Army Commendation Medal for exceptional service.

The military taught him discipline, precision, and the importance of planning three moves ahead. Those same principles guide his approach to every case today.

Over the years, he has earned notable recognition, including:

• Selected for Super Lawyers (2024 – 2026).
• Best Injury Lawyer in Columbia, Inside Columbia Magazine (2025).
• Top 10 Car Accident Lawyers in Columbia, Trust Analytica (2024).
• Best Car Accident Lawyer in Columbia, Expertise.com (2023).
• The Nation’s Top One Percent of Attorneys, National Association of Distinguished Counsel (2015).
• Top 100 and Top 40 Under 40, The National Trial Lawyers (2014).
• Superb (10/10) Rating, Avvo (2012).
• U.S. Army Commendation Medal.

Reviews, testimonials, and professional recognitions can offer helpful insight when selecting legal representation. Tyson Mutrux has built a respected reputation throughout Missouri and Illinois.

Reflecting his dedication to helping injured individuals pursue fair compensation. His careful approach to each case, clear communication, and commitment to client service are also reflected in many positive reviews shared by clients on Google.

You can also connect with us directly on Google to see reviews, updates, and more:

Mutrux Firm Injury Lawyers – St. Louis

Mutrux Firm Injury Lawyers – Columbia

We serve clients across Missouri and Illinois, with dedicated offices in St. Louis and Columbia.

How a Missouri Brain Injury Lawyer Can Help?

A brain stem injury turns a family’s life upside down, and the legal side should not fall on your shoulders while you are focused on a loved one’s recovery. An experienced Missouri brain injury lawyer can investigate the crash, preserve the evidence, bring in the medical and economic professionals who can show what a lifetime of care will cost, and deal with the insurance companies on your behalf. Tyson Mutrux and the team at Mutrux Firm Injury Lawyers handle traumatic brain injury and car accident claims across Missouri and Illinois on a simple promise: No Fees Unless You Win.

You can reach either Missouri office:

• St. Louis office: 222 S Central Ave, Suite 550, St. Louis, MO 63105, phone (314) 270-2273
• Columbia office: 2415 Carter Ln, Suite 102, Columbia, MO 65201, phone (573) 722-2121
• Toll free: (888) 550-4026.