A traumatic brain injury (TBI) happens when a jolt or blow to the head disrupts normal brain function. Concussions are the most common type after crashes. Symptoms like headaches, confusion, and memory trouble can appear immediately or days later, and even mild TBIs deserve prompt medical evaluation.
What a traumatic brain injury is
A TBI occurs when an external force causes the brain to move rapidly inside the skull or strikes the head directly. In a car crash, this can happen even without hitting anything, because the sudden stop can slam the brain against the inside of the skull. The result is bruising, stretched nerve fibers, swelling, or bleeding that interferes with how the brain works.
TBIs range in severity. A concussion is considered a mild TBI, though the word mild is misleading because effects can be significant and long-lasting. Moderate and severe TBIs involve longer loss of consciousness, more pronounced symptoms, and a higher risk of permanent impairment. Any suspected head injury should be evaluated by a medical professional. This page is general information, not medical advice.
Symptoms of a concussion or TBI
Brain injury symptoms can be physical, cognitive, and emotional, and they do not always appear right away. Some develop over hours or days as swelling increases, which is why monitoring after a head impact is so important.
- Headache, dizziness, or a feeling of pressure in the head.
- Confusion, brain fog, or trouble concentrating.
- Memory problems, especially around the crash itself.
- Nausea, vomiting, or sensitivity to light and noise.
- Mood changes, irritability, anxiety, or depression.
- Sleep disturbances and unusual fatigue.
Certain signs are emergencies: repeated vomiting, seizures, worsening or severe headache, slurred speech, weakness, unequal pupils, or loss of consciousness. These require immediate care. When in doubt after any head injury, get evaluated.
Treatment and long-term effects
Mild concussions are often managed with physical and cognitive rest, followed by a gradual, doctor-guided return to activity. Rushing back too soon can prolong recovery. Doctors may use imaging such as CT scans to rule out bleeding, and follow-up care to track symptoms.
Moderate to severe TBIs may require hospitalization, surgery, and extensive rehabilitation involving neurologists, therapists, and specialists in speech, occupational, and cognitive therapy. Recovery is highly individual. Many people recover fully from a concussion, but some experience post-concussion syndrome, with symptoms lasting weeks or months. Severe injuries can bring lasting changes to memory, concentration, personality, and the ability to work. Only your own care team can assess your prognosis.
Why a brain injury matters for a claim
Brain injuries can be invisible on the outside yet profoundly disruptive, affecting work, relationships, and independence. In Texas, the at-fault driver is generally responsible for injuries they cause. Because TBIs may require ongoing care and can reduce earning capacity, their impact often extends well beyond the initial medical bills.
Claim values vary widely and depend on severity, permanence, and how the injury affects daily functioning, so no honest source can promise a figure. Texas generally allows two years from the crash date to pursue a claim. Given that TBI symptoms can be subtle or delayed, early evaluation and careful documentation are particularly important.
Documenting a brain injury
Because many TBI effects are not visible, documentation is crucial. Seek prompt medical care so symptoms are recorded and linked to the crash, and attend all follow-up appointments. Imaging, neurological evaluations, and cognitive testing help create objective evidence. Keep every record and bill.
It also helps for the injured person, and often a family member, to keep notes on cognitive and emotional changes, such as memory lapses, difficulty focusing, mood shifts, or trouble at work. Loved ones frequently notice changes the injured person may not. Together with medical records, these observations give an accurate account of how a brain injury has affected daily life.
Frequently asked questions
Can you have a concussion without losing consciousness?
Yes. Most concussions do not involve loss of consciousness. Confusion, headache, dizziness, and memory trouble can all signal a concussion. Because symptoms may be delayed, prompt evaluation is wise. This is general information, not medical advice.
How long do TBI symptoms last?
Many people recover from a concussion within weeks, but some experience post-concussion symptoms lasting months. Moderate and severe TBIs can have lasting effects. Recovery is highly individual, so follow your doctor’s guidance closely.
Why are brain injuries hard to prove?
TBIs often are not visible externally and mild cases may not show on standard imaging. Prompt care, neurological and cognitive testing, consistent follow-up, and detailed notes on symptoms all help document a genuine brain injury.
Explore related topics including the full injury overview, spinal cord injuries, and catastrophic injuries. Learn what to do after a crash in Houston and about the Texas statute of limitations.