Reviewed by:
Douglas Hoffer,
Personal Injury Attorney, Dansker & Aspromonte Associates LLP, admitted to the New York State Bar.
Last reviewed: August 2026.
Douglas E. Hoffer has been admitted to practice law in New York since 1994 and is currently registered with the New York State Unified Court System under attorney registration number 2581452. He is a graduate of CUNY School of Law and practices personal injury law at Dansker & Aspromonte Associates LLP at 30 Vesey Street in Manhattan.
This page is for general educational purposes only and does not constitute legal advice. Recovery outcomes vary by individual and the figures below describe study populations, not any one person. New York filing requirements depend on your specific case and the identity of the defendant. Consult a qualified New York attorney about your situation and a treating physician about your medical care.
Full recovery from a traumatic brain injury is common after a mild TBI and uncommon after a severe one. In the TRACK-TBI study, 32 percent of moderate and 19.3 percent of severe patients scored zero on the Disability Rating Scale one year after injury, meaning no measurable disability.
The short version
- Short answer. Most mild TBI patients recover. Most severe TBI patients improve but keep some lasting deficit.
- What limits recovery. Injury severity, brain region, delay before treatment, age, prior head injuries, and access to rehabilitation.
- Who these numbers describe. Adults treated at United States Level I trauma centers. They are not a prediction for any individual case.
- How to verify your own outlook. Ask your rehabilitation team for your Glasgow Outcome Scale Extended score and a written recovery plan. Both matter medically and legally.
What TBI Means
TBI stands for traumatic brain injury. It is an injury that changes how the brain works, caused by a bump, blow, jolt, or penetrating wound to the head. The Centers for Disease Control and Prevention reports that most TBIs each year are mild TBIs or concussions. Not every head injury is a TBI, and a person can sustain one without ever losing consciousness.
The scale is large. The CDC recorded about 214,110 TBI-related hospitalizations in 2020 and 69,473 TBI-related deaths in 2021 across the United States, which works out to more than 586 hospitalizations and 190 deaths a day (CDC TBI Data). These counts exclude injuries treated only in an emergency department or never treated at all. In New York specifically, the New York State Department of Health reports more than 2,200 TBI deaths, 17,000 hospitalizations, and almost 38,000 emergency department visits among state residents each year.
How doctors classify TBI severity
The National Institute of Neurological Disorders and Stroke classifies TBI using the Glasgow Coma Scale, the duration of any loss of consciousness, and the duration of post-traumatic amnesia.
- Mild TBI, also called concussion. Glasgow Coma Scale 13 to 15. Loss of consciousness, if any, under 30 minutes.
- Moderate TBI. Glasgow Coma Scale 9 to 12. Loss of consciousness from 30 minutes to 24 hours.
- Severe TBI. Glasgow Coma Scale 3 to 8. Loss of consciousness beyond 24 hours, which may extend to coma.
Can You Fully Recover From a TBI? What the Outcome Data Shows
Full recovery is common after mild TBI and uncommon after severe TBI. The distinction matters because researchers and clinicians use two different measures, and they produce very different pictures of the same patient group. One measures whether a patient is functionally independent. The other measures whether any disability remains at all. Confusing the two is the most common error in how TBI recovery gets described.
The TRACK-TBI study followed 484 patients with moderate to severe TBI at 18 United States Level I trauma centers between February 2014 and August 2018. At 12 months post-injury, 75 percent of moderate TBI patients and 52.4 percent of severe TBI patients had a favorable outcome on the Glasgow Outcome Scale Extended (McCrea et al., JAMA Neurology, 2021). Those figures rest on 54 of 72 moderate patients and 142 of 271 severe patients.
Read that number carefully. A favorable outcome in this study means a score of 4 to 8 on an 8-point scale. Score 4 still describes a person who needs help at home. Favorable is not the same as recovered, and a page that reports 75 percent as regaining independence is overstating what the study measured.
The same study reported the stricter measure. At 12 months, 32 percent of moderate TBI patients and 19.3 percent of severe TBI patients scored zero on the Disability Rating Scale, meaning no disability (McCrea et al., JAMA Neurology, 2021). That is 23 of 71 moderate patients and 52 of 270 severe patients. Roughly one in three moderate patients and one in five severe patients reached that point within the first year.
Recovery from a low starting point does happen. Among TRACK-TBI participants who were in a vegetative state at two weeks, 62 of 79 regained consciousness by 12 months, and 14 of 56 with available data regained orientation (McCrea et al., JAMA Neurology, 2021). Early status is not a verdict.
Are TBIs Permanent? What Lasts and What Recovers
Lasting effects are more common than most people expect, including after injuries labeled mild. Permanence is not a yes or no property of the injury. It is a question of which functions return, how completely, and over what period. New York courts and insurers often review much of the same evidence a rehabilitation team does, which is why the medical record built in the first year can carry weight later.
A separate TRACK-TBI analysis followed 1,154 patients with mild TBI, all with Glasgow Coma Scale 13 to 15, at 11 United States Level I trauma centers. At 12 months post-injury, 53 percent still reported injury-related functional limitations, compared with 38 percent of orthopedic trauma patients who had no head injury (Nelson et al., JAMA Neurology, 2019). Among mild TBI patients whose CT scan showed acute intracranial findings, the figure was 61 percent, against 49 percent for those with a clear scan.
One boundary condition matters when reading that. These were patients who presented to Level I trauma centers, a more seriously injured group than everyone who sustains a concussion. The figure does not describe every mild TBI. It does show that mild TBI treated at a trauma center often is not resolved at one year.
Effects that can persist even in patients considered functionally independent:
- Memory gaps and difficulty holding new information
- Fatigue above the pre-injury baseline, especially under mental effort
- Sensitivity to light and noise
- Irritability, low mood, or a shift in emotional control
- Headaches that return under stress or exertion
- Trouble with planning, multitasking, and executive function
Neuropsychological testing is how these deficits get documented. In a New York personal injury claim, that testing is often what converts a symptom a client describes into evidence a New York court can weigh.
Head Injury Symptoms and the Danger Signs That Need Emergency Care
Symptoms of a mild TBI fall into four groups and may not appear immediately. The CDC notes that some appear right away and others take hours or days. The New York State Department of Health makes the same point for head injuries generally, warning that symptoms may not appear until days or weeks after the injury. Anyone with a suspected head injury should be evaluated by a healthcare provider even if they feel fine at the scene.
Common symptoms, grouped as the CDC groups them (CDC, Symptoms of Mild TBI and Concussion):
- Physical. Headache, dizziness or balance problems, nausea or vomiting early on, vision problems, bothered by light or noise, low energy.
- Thinking and remembering. Trouble concentrating, feeling slowed down, foggy or groggy, short-term or long-term memory problems.
- Social or emotional. Anxiety, irritability, feeling more emotional than usual, sadness.
- Sleep. Sleeping more or less than usual, trouble falling asleep.
Danger signs are different from symptoms. The CDC advises that patients experiencing mild TBI or concussion danger signs “should seek care right away at an emergency department.” Call 911 or go to the nearest emergency department for a headache that keeps getting worse, repeated vomiting, seizures, one pupil larger than the other, slurred speech, unusual drowsiness or an inability to wake up, weakness or numbness, or increasing confusion, restlessness, or agitation.
What Happens if a TBI Is Not Treated: Two Distinct Risks
An untreated TBI carries two distinct risks: a missed emergency, and a slower or incomplete recovery. The first is time-critical. A head injury that looked minor at the scene can worsen in the hours afterward, which is why the CDC lists danger signs separately from ordinary symptoms and directs anyone showing them to an emergency department right away (CDC, Symptoms of Mild TBI and Concussion). The second risk is quieter and unfolds over months. The New York State Department of Health states plainly that “Ignoring symptoms and returning to regular daily activities or sports too soon can make the symptoms worse.”
Persistent symptoms are a documented outcome. With proper care, according to the CDC, most people return to work, school, and other activities within a few days or weeks after a mild TBI, though some have symptoms for months or longer, at which point a provider may raise post-concussive syndrome (CDC, What to Do After a Mild TBI or Concussion). The CDC also identifies who tends to recover more slowly: older adults, young children, and anyone who has had a concussion or other TBI before. Avoiding a second head injury while still symptomatic is part of the treatment, not an optional precaution.
Delay can create a second problem in a New York injury case. When there is no contemporaneous medical record tying symptoms to the incident, the defense may have room to argue the symptoms came from something else. Getting evaluated protects the medical outcome first and the evidentiary record second.
How Long TBI Recovery Takes
Most recovery occurs in the first three to six months, and improvement can continue well beyond a year. These timelines describe adults treated at trauma centers in the TRACK-TBI cohorts and the mild TBI population the CDC addresses. They are not a prediction for any individual injury. Mild TBI typically resolves within days to weeks. The CDC describes recovery from a mild TBI or concussion as the point where “you can do your regular activities without experiencing symptoms.” Moderate and severe injuries move on longer timelines, and the TRACK-TBI data shows substantial gains between two weeks and 12 months.
The trajectory is not linear. Patients often plateau for weeks before new gains appear, which is why a plateau at three months is not a ceiling at twelve.
Factors that affect the pace of recovery:
- Severity of the injury and the region of the brain affected
- How quickly the first medical evaluation happened
- Age at the time of injury
- Prior concussions or head injuries
- Frequency and quality of physical, occupational, speech, and cognitive therapy
- Home environment and social support
Returning to Work, and What Recovery Means for a New York Claim
Many TBI survivors return to work, and the timing should be set by a treating physician rather than an employer or an insurance adjuster. Going back too early raises the risk of prolonged symptoms and re-injury. After a mild TBI, the CDC reports that most people return to work, school, and many other activities within a few days or weeks with proper care, often alongside temporary accommodations such as reduced screen time or shorter hours (CDC, What to Do After a Mild TBI or Concussion). After a moderate or severe TBI, return may take months, may require a different role, or may not be possible at the same level of responsibility.
Work disability stays elevated for years across every severity level. A Swedish national register study followed 98,256 people with TBI aged 21 to 60, diagnosed between 2005 and 2016, against 981,191 matched people without TBI. At five years post-injury the probability of transitioning to work disability, defined as more than 14 days of sickness absence, was 7.1 percent in the least severe group, 10.9 percent in the middle group, and 12.9 percent in the group requiring neurosurgery, against 4.0 percent in the matched controls (Klang et al., Neurology, 2026). Two limits apply. The study grouped patients by the care they received rather than by clinical severity grading, and it drew on Swedish registers and a Swedish sickness benefit system. No equivalent United States register study exists, so treat the direction as informative and the exact percentages as non-transferable.
In New York, lost wages and reduced future earning capacity are recoverable elements of damages when a TBI limits work, depending on liability, causation, and the evidence available. A vocational expert and an economist may be retained to calculate what reduced capacity costs across a working life. Future medical and attendant care is usually established through a life-care plan prepared by a life-care planner alongside the treating physician.
If the TBI happened at work, New York workers’ compensation is a separate track. A workers’ compensation claim and a third-party construction accident claim can sometimes both apply, for example when a worker is injured by a vehicle or by a contractor other than their employer. Motor vehicle crashes, falls, and assaults are the leading causes of TBI in New York according to the state Department of Health, which covers car accidents and slip and fall incidents alike.
On timing. New York injury claims are subject to strict filing deadlines that vary by case type, by the age of the injured person, and by whether a government or municipal body is involved. Claims involving a public entity carry a separate and considerably shorter notice requirement that can bar a case entirely if missed. Do not rely on general information for your own deadline. Speak to an attorney promptly.
Frequently Asked Questions About TBI Recovery
Can you fully recover from a traumatic brain injury?
Often after a mild TBI, sometimes after a moderate one, and uncommonly after a severe one. In the TRACK-TBI study at 12 months, 32 percent of moderate and 19.3 percent of severe patients had no disability on the Disability Rating Scale. Significant improvement is far more common than complete recovery.
Are TBIs permanent?
Some effects can be. In a TRACK-TBI analysis of 1,154 mild TBI patients treated at United States Level I trauma centers, 53 percent still reported injury-related functional limitations at 12 months, against 38 percent of orthopedic trauma patients without head injury. Lasting effects are more common than the word mild suggests.
What does TBI mean?
TBI stands for traumatic brain injury, an injury that changes how the brain works after a bump, blow, jolt, or penetrating wound to the head. Doctors classify it as mild, moderate, or severe using the Glasgow Coma Scale, loss of consciousness duration, and post-traumatic amnesia duration.
What are the symptoms of a head injury?
The CDC groups mild TBI symptoms as physical, thinking and remembering, social or emotional, and sleep. Headache, dizziness, nausea, memory trouble, irritability, and changed sleep are typical. Symptoms may not appear for hours or days. Danger signs such as repeated vomiting, seizures, or a worsening headache require emergency care.
What happens if a TBI is not treated?
Two risks. Bleeding or swelling can develop hours after an impact that seemed minor, which is a medical emergency. Separately, the New York State Department of Health warns that ignoring symptoms and returning to normal activity too soon can make symptoms worse. Some people then have symptoms for months or longer.
How long does TBI recovery take?
Most recovery happens in the first three to six months, with improvement continuing beyond a year in many cases. Mild TBI usually resolves within days to weeks. Moderate and severe injuries recover more slowly, and TRACK-TBI recorded substantial functional gains between two weeks and 12 months post-injury.
Can you return to work after a TBI?
Many people do, and the timing should be set by a treating physician rather than an employer or insurer. Mild TBI often allows return within weeks with temporary accommodations. Moderate to severe TBI may require months, a modified role, or a reduced level of responsibility.
What compensation is available for ongoing TBI care in New York?
A New York personal injury plaintiff may seek past and future medical expenses, lost wages, reduced earning capacity, pain and suffering, and long-term care costs, depending on liability, causation, and available evidence. Future care is typically supported by a life-care plan. Past results do not guarantee a similar outcome.
Next step
If you or a family member sustained a brain injury in New York, ask the rehabilitation team for the recovery plan in writing and keep every record. That document is the backbone of both the medical outcome and any claim for the cost of future care.
Dansker & Aspromonte Associates LLP represents injury clients across New York and works with medical experts and life-care planners to document what a brain injury costs beyond the emergency room bill. See how our New York brain injury attorneys handle these cases or contact us for a free case evaluation. Past results do not guarantee a similar outcome.
Sources
- Centers for Disease Control and Prevention. “About Mild TBI and Concussion.” Accessed August 25, 2026. cdc.gov/traumatic-brain-injury/about
- Centers for Disease Control and Prevention. “Symptoms of Mild TBI and Concussion.” Accessed August 25, 2026. cdc.gov/traumatic-brain-injury/signs-symptoms
- Centers for Disease Control and Prevention. “What to Do After a Mild TBI or Concussion.” Accessed August 25, 2026. cdc.gov/traumatic-brain-injury/response
- Centers for Disease Control and Prevention. “TBI Data.” Accessed August 25, 2026. cdc.gov/traumatic-brain-injury/data-research
- Klang, A., Molero, Y., Bergström, J., Mittendorfer-Rutz, E., Oldenburg, C., & Rostami, E. (2026). Five-year follow-up of work disability after traumatic brain injury: A nationwide Swedish matched cohort study of 98,000 individuals. Neurology, 106(5), e214674. https://pubmed.ncbi.nlm.nih.gov/41671521/
- McCrea, M. A., Giacino, J. T., Barber, J., Temkin, N. R., Nelson, L. D., Levin, H. S., … Manley, G. T. (2021). Functional outcomes over the first year after moderate to severe traumatic brain injury in the prospective, longitudinal TRACK-TBI study. JAMA Neurology, 78(8), 982-992. https://pubmed.ncbi.nlm.nih.gov/34228047/
- National Institute of Neurological Disorders and Stroke. “Traumatic Brain Injury (TBI).” Accessed August 25, 2026. ninds.nih.gov
- Nelson, L. D., Temkin, N. R., Dikmen, S., Barber, J., Giacino, J. T., Yuh, E., … Manley, G. T. (2019). Recovery after mild traumatic brain injury in patients presenting to US Level I trauma centers: A TRACK-TBI study. JAMA Neurology, 76(9), 1049-1059. https://pubmed.ncbi.nlm.nih.gov/31157856/
- New York State Department of Health. “Traumatic Brain Injury.” Accessed August 25, 2026. health.ny.gov
Sources last verified August 25, 2026. Medical information on this page describes study populations and general patterns. Verify anything about your own condition with your treating physician.
This content is for informational purposes only and does not constitute legal advice. New York filing deadlines vary by case type, by the age of the injured person, and by the identity of the defendant. Consult a licensed New York attorney about your situation. Past results do not guarantee a similar outcome.