Hit Your Head in a Car Accident? Know the Symptoms That Need Attention

A head injury after a car crash needs emergency care right away if you notice loss of consciousness, a seizure, repeated vomiting, or a headache that keeps getting worse. Other symptoms can appear hours or days later, and those still need a prompt medical check.

Why a Head Injury After a Crash Deserves Prompt Attention

A blow to the head can injure the brain even when there’s no visible wound. Feeling fine at the scene doesn’t rule out a brain injury.

Adrenaline and shock can hide pain and confusion. Many people feel shaken but able to walk and talk, so they skip the doctor. That can be a mistake. The American Association of Neurological Surgeons describes concussion and mild traumatic brain injury as conditions that can involve changes in mental state or consciousness. Headache, dizziness, balance, and thinking problems can also follow.

Symptoms after a car crash may be delayed or masked during an emergency-room exam, according to the Brain Injury Association of America. That’s why the warning signs matter. Whether the crash happened in the Shenandoah Valley, Richmond, or Henrico County, the same signs apply. For the wider picture, the firm’s guide to traumatic brain injury after car and truck crashes covers the topic in more depth.

Warning Signs That Call for Emergency Care Right Away

Get emergency care right away if you notice any of these signs after a hit to the head. If someone can’t be woken or is having a seizure, call 911 now.

• Loss of consciousness, even briefly, or being hard to wake.
• A seizure, repeated vomiting, or a headache that keeps getting worse.
• New confusion, slurred speech, or unusual drowsiness.
• Weakness or numbness in an arm or leg, or loss of coordination.
• One pupil larger than the other.
• Clear fluid or blood from the nose or ears.

Older adults and people taking blood thinners need faster evaluation after any hit to the head. Their symptoms can seem mild and still be serious. Don’t wait to see whether the signs fade on their own.

Concussion Symptoms That Can Appear Later

Some concussion symptoms start hours or days after the crash, not right away. The American Association of Neurological Surgeons lists headache, dizziness, and balance problems among the symptoms that can follow a concussion. Nausea, ringing in the ears, and sensitivity to light or noise are also commonly reported.

Because signs can wait, a person who felt fine at the scene should still be checked if new symptoms appear. Any new headache, dizziness, or nausea after a head hit calls for a same-day medical visit. This is true even when there’s no dramatic sign.

The Brain Injury Association of America advises patients to monitor their symptoms. They should report new or worsening problems to health care professionals. Keep watching for changes over the following days and weeks, not just the first night.

What Loss of Consciousness Does and Does Not Tell You

Losing consciousness is a serious sign. But not losing it doesn’t mean the brain is uninjured. A brain injury can change mental state as well as consciousness, so a person can be affected while fully awake.

Any gap in memory of the crash itself should be reported to the emergency team. A missing memory of the minutes just before or after impact is a warning sign. This is true even if the person stayed awake the whole time.

Only a medical evaluation can show how serious a brain injury is. Don’t rely on how you feel to decide whether you’re fine. Tell the doctor exactly what happened, including any time you think you may have blacked out.

Memory, Thinking, and Mood Changes to Watch For

Memory gaps, slowed thinking, and mood changes can signal a brain injury after a crash. These changes often appear days after the crash, when life feels back to normal.

Watch for memory lapses, especially about the crash or the minutes around it. Trouble concentrating, slowed thinking, or trouble finding words are also worth noting. Irritability, impulsiveness, and sudden emotional swings can show up too.

Family members often notice these changes first. A spouse, parent, or friend may see a shift before the injured person does. Ask them to tell you what they see, and write it down with the dates.

How Emergency Medical Evaluation Works

At the emergency department, staff usually check brain function and ask about the crash and each symptom. They decide whether imaging is needed. The exact steps depend on the injury and the person’s condition.

An exam can miss symptoms, so keep tracking them after a normal result. The Brain Injury Association of America’s guidance on monitoring applies even when the first tests look reassuring.

Tell every provider about all symptoms, including ones that seem minor. List any blood thinners or other medicines you take. Ask for written discharge instructions, and keep them with your symptom log.

Keeping a Symptom Log and Reporting the Crash

Keep a written symptom log, and report the crash to police as Virginia law requires. Write down each symptom, when it started, how it changed each day, and any medicine taken. Note appointments and the names of the providers you saw.

Bring the log to every follow-up visit. A clear timeline helps your doctor see whether symptoms come and go, or get worse.

Virginia requires a driver involved in a crash with injury or death to stop and report it to police immediately (Va. Code §§ 46.2-371, 46.2-894). The statutes are at Va. Code § 46.2-371 and Va. Code § 46.2-894.

A lawsuit has its own deadline. Virginia generally allows two years from the date of injury to file a personal injury lawsuit (Va. Code § 8.01-243(A)); the clock runs from the date of injury, not the date of discovery, with narrow exceptions. The two-year period is a deadline for filing a lawsuit, not for reporting a crash. The statute’s text is at Va. Code § 8.01-243.

Recovery, Rehabilitation, and Questions to Ask Your Doctor

Recovery from a concussion varies. Some people need physical, occupational, or speech therapy to regain strength, focus, or words. Your doctor can explain whether therapy fits your symptoms.

Bring a short list of questions to each visit. Ask which symptoms to expect in the coming weeks. Ask when it’s safe to return to work and to driving. Ask which warning signs mean an immediate trip to the emergency department. Write the answers in your symptom log.

Readers in Richmond, Henrico County, and the Shenandoah Valley can find the firm’s car accident and truck accident information for more context on the crash types discussed here.

Common Questions About Head Injuries After a Crash