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Traumatic brain injury (TBI) treatment depends on how serious the injury is and what clinicians find. A concussion is a mild TBI, but it still needs medical assessment. Care may range from symptom monitoring and a gradual return to activity to emergency hospital treatment, surgery, and rehabilitation. If someone has danger signs after a head injury, call your local emergency number or go to an emergency department now.
When is a head injury an emergency?
Call your local emergency number or go to an emergency department for any of these danger signs after a head injury. Do not wait to see if they pass. The CDC’s warning signs include:
- A headache that gets worse or does not go away
- Repeated vomiting
- A seizure
- Weakness, numbness, or reduced coordination
- Slurred speech, unusual behavior, confusion, restlessness, or agitation
- One pupil larger than the other
- Loss of consciousness, unusual drowsiness, or difficulty waking the person
In a child, also seek emergency care for inconsolable crying or refusing to nurse or eat. For other concerns after a head injury, contact a healthcare provider promptly; symptoms can emerge or change over time.
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A healthcare provider evaluates a suspected concussion or other TBI. The assessment may cover the injury and symptoms, and check learning, memory, concentration, and problem-solving. A normal result on a cognitive check does not rule out a mild TBI.
A CT scan is not needed for every concussion. A clinician may order one when the injury or the person’s findings raise concern about bleeding or another problem that imaging can detect. The decision depends on the individual assessment; a scan is not, by itself, a treatment for concussion. The CDC’s adult mild-TBI guidance identifies the American College of Emergency Physicians’ 2023 clinical policy as the basis for its emergency-care recommendations.
How treatment differs by severity
There is no single treatment plan for everyone. The care setting and next steps depend on the injury, symptoms, examination findings, and how the person functions.
| Care pathway | What treatment may involve | What to expect |
|---|---|---|
| Mild TBI or concussion | Clinician assessment, symptom management, a short period of relative rest, then a gradual return to activity as tolerated. | Many people improve within a couple of weeks, though some have symptoms for months or longer. (CDC, 2025) |
| Moderate or severe TBI | Emergency or inpatient hospital care may include close monitoring and treatment for complications such as raised pressure inside the skull. Medical or surgical interventions depend on the findings. | Some people need specialized rehabilitation and follow-up after hospital care. The services and recovery course vary by person. |
What happens after a concussion?
Concussion symptoms can affect physical comfort, thinking and memory, mood, and sleep. They may begin immediately or appear hours or days after the injury, and can change during recovery. Examples include headache, dizziness, balance or vision problems, fatigue, difficulty concentrating or remembering, anxiety or irritability, and sleeping more or less than usual.
Rest, then return gradually
CDC guidance recommends resting during the first few days, when symptoms are often most severe. A short break from work or school may be needed, usually no more than one or two days. After a day or two, ease back into regular activities and try light physical activity, such as a walk, as tolerated. If symptoms worsen, reduce activity and contact the clinician.
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Ask the healthcare provider for instructions suited to the person’s situation, including when it is safe to return to work or school, drive, and resume sports or other activities. Avoid imposing prolonged strict rest without individualized medical advice.
When to seek follow-up
Contact a healthcare provider if symptoms worsen after resuming usual activity or are not resolving within two to three weeks. Some people have longer-lasting symptoms and may need further evaluation or care. These timeframes are guidance, not a prediction of any one person’s recovery.
What care may be needed after moderate or severe TBI?
Depending on the injury, emergency and critical-care teams may monitor pressure inside the skull and provide medical or surgical treatment. Specific decisions are made by the treating team based on the person’s condition. The Brain Trauma Foundation’s Guidelines for the Management of Severe TBI, 4th Edition (2016) notes that evidence is not strong enough to support a specific recommendation in some areas. For example, it says evidence was insufficient to recommend a particular hyperosmolar agent or its use based on clinical outcomes. That guideline is for clinicians, not a basis for patients or caregivers to choose treatment.
Rehabilitation and daily function
Rehabilitation may help someone relearn skills, increase independence with daily tasks, reconnect socially, participate in the community, and work toward returning to work. A team may consider services such as physical, occupational, or speech-language therapy; recreation, creative arts, kinesiotherapy, or vocational rehabilitation; support for cognitive or behavioral problems; mental health care; assistive devices; medicines or procedures; and, in some cases, emergency surgery. These are possible individualized services, not a package everyone receives. The VA describes available examples of care, but local programs and referrals depend on location and providers.
Recovery varies. The VA says progress may be fastest during the first three months to a year, with slower gains possible for years. This is a general description, not a guaranteed schedule or outcome.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.How long does recovery take?
The CDC says most people with mild TBI or concussion feel better within a couple of weeks. Some have symptoms for months or longer, so recovery is not measured by a single deadline. Follow-up is important when symptoms worsen, interfere with daily activities, or are not resolving in the expected period.
For moderate or severe TBI, the course depends on the injury and the person’s needs. Rehabilitation can continue to support functional gains, but an individual timeline or outcome cannot be determined from a general guide. A pediatric clinician should advise on a child’s care and recovery plan.
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