A traumatic brain injury can affect the brain in many different ways. While symptoms such as headaches, memory problems, dizziness, and fatigue are commonly associated with TBI, some individuals may also experience seizures after an injury.
TBI seizures can occur shortly after trauma or develop months or even years later. Understanding why seizures may happen, recognizing potential warning signs, and knowing when to seek medical care can help individuals and families respond appropriately.
What Is a Seizure?
A seizure occurs when there is a sudden burst of abnormal electrical activity in the brain. Seizures can affect movement, awareness, sensations, emotions, or behavior depending on which areas of the brain are involved.
Not every seizure looks the same. Some involve noticeable shaking or loss of consciousness, while others may cause brief periods of staring, confusion, unusual sensations, or repetitive movements.
Following a traumatic brain injury, changes to brain tissue may increase the risk of abnormal electrical activity.
Why Can TBI Cause Seizures?
Brain trauma can damage or alter brain tissue. During the healing process, injured areas may develop changes that make abnormal electrical activity more likely.
Several factors can influence the risk of developing seizures after TBI, including:
- The severity of the brain injury
- Bleeding inside or around the brain
- Skull fractures
- Penetrating head injuries
- Damage to specific areas of the brain
- Previous seizures or neurological conditions
- Certain complications that develop following the injury
The risk is not the same for everyone with a traumatic brain injury. Some people may never experience a seizure, while others may develop seizures as part of their long-term recovery.
When Can Seizures Occur After TBI?
Seizures following a brain injury are often categorized based on when they occur.
Early Post-Traumatic Seizures
Early seizures happen relatively soon after the injury, generally within the first week. They may be associated with the immediate effects of trauma on the brain.
Late Post-Traumatic Seizures
Seizures that occur more than a week after the injury are considered late post-traumatic seizures. These may develop well after the initial trauma.
A person who experiences a seizure long after a head injury should still tell their healthcare provider about their history of TBI, even if the injury occurred months or years earlier.
Warning Signs of a Seizure
Recognizing seizure symptoms can be difficult because they vary significantly from person to person. Possible signs include:
- Sudden, uncontrolled jerking or shaking
- Stiffening of the body or limbs
- Brief loss of awareness
- Staring and appearing unresponsive
- Temporary confusion
- Repetitive movements
- Unusual sensations or changes in perception
- Sudden changes in behavior or emotions
- Loss of bladder or bowel control
- Falling or losing consciousness
After a seizure, a person may be confused, tired, have difficulty speaking, or need time to return to their usual level of awareness.
Are All Seizures Obvious?
No. Some seizures may be subtle and difficult to recognize.
A person may briefly stop responding, stare into space, make repetitive movements, or appear confused without experiencing dramatic shaking. These episodes can sometimes be mistaken for distraction, fatigue, or other TBI-related symptoms.
Keeping track of unusual episodes can be helpful when discussing symptoms with a healthcare professional.
What Should You Do If Someone Has a Seizure?
If someone experiences a seizure, focus on keeping them safe rather than trying to stop the movements.
Helpful steps include:
- Move nearby dangerous objects away if it can be done safely.
- Place something soft under their head if possible.
- Turn the person onto their side when practical, particularly after the movements stop.
- Keep track of how long the seizure lasts.
- Stay with the person until they become alert and responsive.
- Avoid restraining them.
- Do not place anything in their mouth.
Emergency medical assistance may be necessary if the seizure lasts more than five minutes, another seizure begins before the person recovers, the person has difficulty breathing or waking afterward, the seizure occurs in water, or the person has been seriously injured.
How Are TBI Seizures Diagnosed?
A healthcare professional may review the person’s medical history, details of the head injury, symptoms, and description of the seizure.
Testing may include an electroencephalogram (EEG), which records electrical activity in the brain. Depending on the circumstances, brain imaging such as a CT scan or MRI may also be used to evaluate structural changes or other abnormalities.
Because seizure-like episodes can have different causes, proper medical evaluation is important before determining an appropriate treatment plan.
How Are Seizures After TBI Treated?
Treatment depends on factors such as the type and frequency of seizures, the severity of the brain injury, and the individual’s overall health.
A healthcare professional may prescribe anti-seizure medication when appropriate. In some situations, additional neurological testing or follow-up may be recommended.
Treatment is individualized, and medication should only be started, stopped, or changed under the direction of a qualified healthcare professional.
Living With Seizure Risk After a Brain Injury
For individuals who have experienced tbi seizures, managing seizure risk may become part of long-term recovery. Following a treatment plan and attending recommended medical appointments can help monitor symptoms.
It may also be useful to keep a record of unusual episodes, including when they occurred, how long they lasted, what happened beforehand, and how the person felt afterward. This information can help healthcare professionals better understand changes over time.
When to Seek Emergency Care
A seizure can require immediate medical attention, particularly when it is prolonged or accompanied by other serious symptoms.
Emergency care is generally appropriate when a seizure lasts longer than five minutes, multiple seizures occur without recovery between them, the person has difficulty breathing afterward, or a significant injury occurs during the episode.
Anyone experiencing a first seizure should receive medical evaluation to determine the possible cause.
Final Thoughts
TBI seizures can occur when traumatic brain injury causes changes that make abnormal electrical activity in the brain more likely. They may happen soon after an injury or develop much later, and symptoms can range from obvious shaking to brief periods of altered awareness or confusion.
Recognizing potential warning signs and seeking appropriate medical evaluation can help identify seizures and determine the next steps for treatment and ongoing care.
Disclaimer: The information provided in this article is for educational purposes only and is not intended to substitute for professional medical advice, diagnosis, or treatment.