A concussion and a traumatic brain injury can sound like two different diagnoses, but they are closely connected. In most cases, a concussion is considered a mild traumatic brain injury, or mild TBI. The confusion comes from the fact that “TBI” is a broader term that can describe mild, moderate, or severe brain injuries, while “concussion” usually refers to a milder form of brain injury that affects how the brain functions.
Understanding TBI vs concussion matters because the word “mild” does not always mean the symptoms are easy or short-lived. Headaches, dizziness, brain fog, nausea, light sensitivity, sleep changes, mood changes, and vision problems can still interfere with daily life after a concussion. In this blog, we’ll explain the difference between concussion and TBI, whether a concussion is a TBI, how symptoms and recovery may differ, and when persistent symptoms may need further evaluation and care.
Key Takeaways
- TBI vs concussion comes down to category and severity. A concussion is usually considered a mild traumatic brain injury, while TBI is the broader term that can include mild, moderate, and severe brain injuries.
- A concussion can be serious even when imaging looks normal. Many concussions affect brain function rather than causing visible structural damage, which means symptoms like headaches, dizziness, brain fog, nausea, light sensitivity, and balance problems should still be taken seriously.
- Persistent symptoms after a concussion or mild TBI may need further evaluation. Ongoing dizziness, headaches, brain fog, vision changes, fatigue, motion sensitivity, or difficulty returning to daily activities may benefit from objective testing and personalized neurological rehabilitation.
Table of Contents
TBI vs Concussion: The Short Answer
A concussion is a type of traumatic brain injury, or TBI. The main difference is that TBI is the broader term, while concussion usually refers to a mild traumatic brain injury that affects how the brain functions. In other words, every concussion is considered a TBI, but not every TBI is a concussion.
Is a Concussion a TBI?
Yes, a concussion is a TBI. More specifically, it is usually considered a mild TBI because it often affects brain function without causing the same level of structural damage seen in more severe brain injuries. A concussion can happen after a bump, blow, jolt, fall, sports injury, car accident, or any force that causes the head and brain to move rapidly.
Is TBI and Concussion the Same?
TBI and concussion are closely related, but they are not exactly the same. TBI is an umbrella term that includes mild, moderate, and severe brain injuries. A concussion falls under the mild TBI category, while other TBIs may involve bleeding, bruising, torn tissue, swelling, or more serious changes that can require emergency care or long-term medical management.
Why a Concussion Is Usually Considered a Mild TBI
A concussion is usually considered a mild TBI because it typically causes a temporary change in brain function rather than an obvious structural injury on standard imaging. Symptoms may include headache, dizziness, nausea, brain fog, light sensitivity, sound sensitivity, sleep changes, mood changes, balance problems, or trouble concentrating. Even when a scan looks normal, the brain may still be recovering at a functional level.
Why “Mild” Does Not Mean Symptoms Should Be Ignored
The word “mild” can be misleading. A mild TBI or concussion is usually not life-threatening, but symptoms can still be serious, disruptive, and long-lasting for some people. If symptoms worsen, persist, or interfere with work, school, driving, exercise, sleep, or daily life, it is important to seek medical evaluation instead of pushing through.
What Is a Traumatic Brain Injury, or TBI?
A traumatic brain injury, or TBI, happens when an outside force disrupts normal brain function. This can occur after a blow, bump, jolt, fall, car accident, sports injury, assault, or another event that causes the head and brain to move suddenly. TBIs can range from mild to severe, and symptoms may affect thinking, movement, balance, mood, sleep, and daily function.
What Causes a Traumatic Brain Injury?
A TBI is caused by trauma to the head or body that affects the brain. The injury may happen from a direct hit to the head, rapid acceleration and deceleration, or an object penetrating the skull. Common causes include:
- Falls
- Motor vehicle accidents
- Sports injuries
- Workplace accidents
- Assaults or physical trauma
- Blast injuries
- Bicycle, scooter, or recreational accidents
The severity of the injury depends on several factors, including the force of impact, the location of the injury, whether there was loss of consciousness, and whether the brain experienced bleeding, swelling, bruising, or other damage.
Mild vs. Moderate vs. Severe TBI
TBI is an umbrella term that includes mild, moderate, and severe brain injuries. A concussion is usually considered a mild TBI, but not every TBI is a concussion.
- Mild TBI: A mild TBI may cause temporary changes in brain function, such as headache, dizziness, confusion, nausea, brain fog, light sensitivity, or trouble concentrating. Standard imaging may look normal, but symptoms can still be disruptive.
- Moderate TBI: A moderate TBI may involve longer-lasting symptoms, a longer period of confusion or loss of consciousness, and a greater impact on thinking, movement, or daily function. Medical monitoring and follow-up care are often needed.
- Severe TBI: A severe TBI may involve extended loss of consciousness, significant brain injury, bleeding, swelling, or structural damage. Severe TBIs can be life-threatening and may require emergency care, hospitalization, surgery, rehabilitation, and long-term support.
Common TBI Symptoms
TBI symptoms can vary depending on the type and severity of the injury. Some symptoms appear right away, while others may develop hours or days later.
Common symptoms may include:
- Headache or head pressure
- Dizziness, vertigo, or balance problems
- Nausea or vomiting
- Brain fog or confusion
- Trouble concentrating or remembering
- Light or sound sensitivity
- Blurred vision or eye strain
- Fatigue or low energy
- Sleep changes
- Mood changes, irritability, anxiety, or sadness
- Neck pain or tension
- Trouble with coordination or movement
Even mild symptoms should be monitored, especially if they are getting worse or interfering with daily life.
Serious TBI Signs That Need Emergency Care
Some symptoms after a head injury may point to a more serious problem and should be treated as urgent. Seek emergency care right away if any of the following occur:
- Worsening or severe headache
- Repeated vomiting
- Seizure
- Loss of consciousness
- Confusion that gets worse
- Slurred speech
- Weakness, numbness, or tingling
- Trouble walking or poor coordination
- One pupil larger than the other
- Unusual behavior, agitation, or increasing drowsiness
- Fluid or blood from the ears or nose
- Trouble waking up
- Symptoms that rapidly worsen after the injury
These warning signs should not be ignored, even if the injury seemed minor at first.
How TBI Can Affect Thinking, Movement, Mood, and Daily Function
A TBI can affect the brain in ways that make everyday tasks harder. Some people struggle with memory, attention, processing speed, decision-making, or mental fatigue. Others may notice dizziness, balance problems, headaches, vision changes, motion sensitivity, or difficulty returning to work, school, driving, exercise, or social activities.
TBI can also affect mood, sleep, and nervous system regulation. A person may feel more irritable, anxious, tired, overwhelmed, or unlike themselves after the injury. Because TBI symptoms can involve multiple systems, a careful evaluation can help identify what may be contributing to symptoms and guide a more personalized recovery plan.
What Is a Concussion?
A concussion is a type of mild traumatic brain injury that happens when a bump, blow, jolt, fall, or hit to the body causes the head and brain to move rapidly. This movement can temporarily disrupt normal brain function, even if there is no visible injury on the outside of the head. A concussion can affect thinking, balance, vision, mood, sleep, and how the nervous system responds to daily demands.
What Happens to the Brain During a Concussion?
During a concussion, the brain may move or twist inside the skull. This can create temporary changes in how brain cells communicate and how the brain uses energy. While many concussions do not show structural damage on standard imaging, symptoms can still be real and disruptive because the injury affects how the brain functions.
A concussion may happen from:
- A fall
- A sports injury
- A car accident
- A blow to the head
- A hit to the body that causes rapid head movement
- A workplace or recreational injury
Common Concussion Symptoms
Concussion symptoms can vary from person to person. Some people feel symptoms right away, while others notice them later.
Common symptoms may include:
- Headache or pressure in the head
- Dizziness, vertigo, or balance problems
- Nausea or vomiting
- Brain fog or confusion
- Trouble concentrating or remembering
- Light or sound sensitivity
- Blurred vision or eye strain
- Fatigue or low energy
- Sleep changes
- Mood changes, irritability, anxiety, or sadness
- Motion sensitivity
- Neck pain or tension
These symptoms may be mild at first, but they should be monitored closely, especially if they worsen or begin affecting daily activities.
Can You Have a Concussion Without Losing Consciousness?
Yes, you can have a concussion without losing consciousness. Many people who experience a concussion never pass out. Loss of consciousness can happen, but it is not required for a concussion diagnosis.
This is why it is important to watch for other symptoms after a head injury. Headache, dizziness, confusion, nausea, brain fog, vision changes, balance problems, or feeling “off” after an impact may still suggest a concussion, even if the person stayed awake the entire time.
Why Concussion Symptoms Can Appear Hours or Days Later
Concussion symptoms do not always appear immediately. Some symptoms may develop hours or days after the injury as the brain responds to the impact and the person returns to normal activities. This delayed symptom pattern can make concussion easy to miss at first.
For example, someone may feel okay right after a fall or sports injury, then later notice headaches, dizziness, fatigue, light sensitivity, trouble focusing, or sleep changes. Because symptoms can change over time, it is important to rest, monitor how you feel, and avoid returning too quickly to high-risk activities.
When a Concussion Needs Medical Evaluation
A concussion should be evaluated by a healthcare provider if symptoms are severe, worsening, persistent, or interfering with daily life. It is also important to seek care if symptoms affect driving, work, school, exercise, sleep, balance, vision, or concentration.
Seek emergency care right away after a head injury if any of the following occur:
- Worsening or severe headache
- Repeated vomiting
- Seizure
- Loss of consciousness
- Slurred speech
- Weakness, numbness, or decreased coordination
- One pupil larger than the other
- Increasing confusion, restlessness, or unusual behavior
- Trouble waking up or extreme drowsiness
- Symptoms that rapidly get worse
Even though a concussion is usually considered a mild TBI, it should still be taken seriously. Getting evaluated can help rule out more serious injury and guide a safer recovery plan.
Concussion vs TBI: Key Differences Patients Should Know
When comparing concussion vs TBI, the most important thing to understand is that a concussion is usually a type of mild TBI. TBI is the broader category, while concussion is one specific form of traumatic brain injury. The differences often come down to severity, diagnosis, imaging findings, symptoms, and recovery timeline.
| Category | Concussion | TBI |
| Definition | A mild traumatic brain injury that temporarily affects brain function | A broader term for any traumatic injury that disrupts brain function |
| Severity | Usually mild | Can be mild, moderate, or severe |
| Imaging | Often does not show visible damage on standard CT or MRI | May or may not show bleeding, swelling, bruising, or structural injury, depending on severity |
| Symptoms | Headache, dizziness, brain fog, nausea, light sensitivity, sound sensitivity, sleep changes, and trouble concentrating | Can include concussion symptoms plus more serious signs such as prolonged confusion, weakness, seizures, loss of consciousness, or neurological deficits |
| Recovery | Many people improve with time and proper care, though symptoms can persist | Recovery depends on severity, injury type, complications, and rehabilitation needs |
Difference Between Concussion and TBI by Severity
A concussion is usually considered a mild TBI, while TBI can describe mild, moderate, or severe brain injuries. Mild TBIs may cause temporary changes in brain function, while moderate or severe TBIs may involve longer loss of consciousness, prolonged confusion, bleeding, swelling, bruising, or structural damage. This is why the terms are related, but not interchangeable in every situation.
Difference Between Concussion and TBI by Diagnosis
A concussion is often diagnosed based on symptoms, injury history, and a clinical evaluation. A provider may ask what happened, whether symptoms appeared right away or later, and how the injury affected thinking, balance, vision, mood, sleep, and daily function. A TBI diagnosis may also involve symptom review and clinical exam, but moderate or severe cases may require emergency evaluation, imaging, neurological monitoring, or hospital-based care.
Difference Between Concussion and TBI by Symptoms
Concussion symptoms often include headache, dizziness, nausea, brain fog, balance problems, light sensitivity, sound sensitivity, fatigue, mood changes, sleep changes, and trouble concentrating. More serious TBIs may include these symptoms along with warning signs such as repeated vomiting, seizures, worsening confusion, weakness, numbness, slurred speech, trouble walking, loss of consciousness, or difficulty waking. Any severe or worsening symptoms after a head injury should be treated as urgent.
Difference Between Concussion and TBI by Imaging Findings
A key difference between concussion and more serious forms of TBI is that concussion often does not show visible damage on standard imaging. A CT scan or MRI may look normal even when symptoms are real and disruptive. Moderate or severe TBIs are more likely to involve findings such as bleeding, bruising, swelling, skull fracture, or other structural injury, depending on the type and severity of trauma.
Difference Between Concussion and TBI by Recovery Timeline
Recovery after a concussion can vary. Some people improve within days or weeks, while others experience persistent symptoms such as dizziness, headaches, brain fog, fatigue, motion sensitivity, or vision problems. Recovery from a broader TBI depends on the severity of the injury, whether there were complications, and what systems were affected. Moderate or severe TBIs may require longer medical care, rehabilitation, and support for thinking, movement, mood, communication, or daily function.
Other Types of Traumatic Brain Injuries Beyond Concussion
A concussion is one type of traumatic brain injury, but it is not the only one. TBIs can vary widely depending on the force of impact, the area of the brain affected, whether there is bleeding or swelling, and how severe the injury is. Understanding other types of traumatic brain injuries can help explain why TBI vs concussion is not always a simple one-to-one comparison.
Brain Contusion
A brain contusion is a bruise on the brain tissue. It can happen when the brain strikes the inside of the skull during a fall, collision, car accident, or direct blow to the head. Unlike many concussions, a contusion may involve visible tissue injury and may show up on imaging.
Symptoms can vary depending on the size and location of the contusion, but may include headache, confusion, dizziness, nausea, weakness, difficulty speaking, coordination problems, or changes in alertness. Larger or worsening contusions may need close medical monitoring because swelling or bleeding can create additional pressure inside the skull.
Coup-Contrecoup Injury
A coup-contrecoup injury happens when the brain is injured at the site of impact and also on the opposite side of the brain. This can occur when the force of the injury causes the brain to move rapidly inside the skull. For example, a blow to the front of the head may cause injury at the front and also at the back as the brain rebounds.
These injuries can affect multiple areas of brain function. Symptoms may include headaches, dizziness, confusion, memory problems, balance issues, mood changes, vision problems, or difficulty concentrating. The severity depends on the force of the injury and which areas of the brain are affected.
Diffuse Axonal Injury
Diffuse axonal injury, or DAI, happens when rapid movement causes stretching or tearing of nerve fibers in the brain. This type of injury is often linked to high-force trauma, such as car accidents, falls, or severe rotational forces. Because it can affect communication between brain regions, symptoms may be widespread.
A mild form may cause concussion-like symptoms, while more severe cases can lead to prolonged unconsciousness, significant cognitive changes, movement problems, or long-term neurological impairment. Diffuse axonal injury can be serious and often requires urgent medical evaluation and ongoing rehabilitation.
Brain Bleeding or Hematoma
Brain bleeding or hematoma refers to bleeding in or around the brain after trauma. This can include bleeding between the skull and brain, within the brain tissue, or around the protective layers of the brain. Because bleeding can increase pressure inside the skull, it can become a medical emergency.
Possible warning signs may include worsening headache, repeated vomiting, confusion, weakness, numbness, slurred speech, seizures, unequal pupils, extreme drowsiness, or loss of consciousness. Any concern for brain bleeding after a head injury should be evaluated right away.
Penetrating Brain Injury
A penetrating brain injury occurs when an object breaks through the skull and enters the brain tissue. This is typically a severe form of TBI and requires emergency medical care. The damage depends on the object, path of injury, affected brain region, bleeding, infection risk, and related complications.
Symptoms may include severe bleeding, loss of consciousness, seizures, weakness, confusion, difficulty speaking, vision changes, or major neurological changes. Penetrating brain injuries often require urgent hospital-based care and may involve surgery, medication, monitoring, and rehabilitation.
Why Type and Severity Matter for Treatment
The type and severity of a TBI affect how it is evaluated, treated, and monitored. A mild concussion may not show visible injury on imaging, while more serious TBIs may involve bruising, bleeding, swelling, torn nerve fibers, skull fracture, or penetrating trauma. This is why symptoms, injury history, neurological exam findings, and imaging results all matter.
Treatment may include rest, symptom management, emergency care, imaging, surgery, medication, neurological monitoring, or rehabilitation depending on the injury. For patients with lingering symptoms after a concussion or mild TBI, neurological rehabilitation may help support balance, vision, coordination, sensory processing, and daily function. The most important step is getting the right evaluation so the care plan matches the injury and the patient’s needs.
Post-Concussion Syndrome vs TBI: What Is the Difference?
Post-concussion syndrome and TBI are related, but they are not the same thing. A traumatic brain injury, or TBI, is the injury itself. Post-concussion syndrome refers to symptoms that continue after a concussion or mild TBI longer than expected. In simple terms, TBI describes the event and injury category, while post-concussion syndrome describes an ongoing pattern of symptoms after that injury.
What Is Post-Concussion Syndrome?
Post-concussion syndrome, also called persistent post-concussive symptoms, happens when symptoms continue for weeks or months after a concussion. These symptoms may affect thinking, balance, vision, mood, sleep, energy, and daily function. Common symptoms may include:
- Headaches
- Dizziness or vertigo
- Brain fog
- Trouble concentrating
- Memory problems
- Fatigue
- Light or sound sensitivity
- Sleep changes
- Irritability, anxiety, or mood changes
- Blurred vision or eye strain
- Motion sensitivity
Not everyone who has a concussion develops post-concussion syndrome, but persistent symptoms should not be ignored.
Difference Between Post-Concussion Syndrome and TBI
The difference between post-concussion syndrome and TBI is that TBI refers to the brain injury, while post-concussion syndrome refers to ongoing symptoms after a concussion or mild TBI. A person can have a concussion, which is a mild TBI, and recover within days or weeks. Another person may have symptoms that last longer and begin affecting work, school, driving, exercise, sleep, or quality of life.
A broader TBI can be mild, moderate, or severe. Post-concussion syndrome is usually discussed in the context of concussion or mild TBI, not as a separate new injury. It is better understood as a prolonged recovery pattern that may involve multiple systems, including the brain, eyes, vestibular system, neck, autonomic nervous system, and sensory processing pathways.
Why Symptoms Can Persist After a Mild TBI
Symptoms can persist after a mild TBI for several reasons. Even if standard imaging looks normal, the brain may still be working harder to regulate energy, attention, balance, vision, sleep, mood, and sensory input. Some patients may also have overlapping issues that continue to trigger symptoms.
Persistent symptoms may be influenced by:
- Vestibular dysfunction
- Eye movement or visual processing problems
- Neck injury or muscle tension
- Autonomic nervous system changes
- Migraine-like headache patterns
- Sleep disruption
- Stress, anxiety, or sensory overload
- Returning too quickly to work, school, exercise, or screen use
Because several systems can be involved, treatment often works best when it is personalized to the patient’s symptoms and exam findings.
Dizziness, Brain Fog, Headaches, and Vision Changes After Concussion
Dizziness, brain fog, headaches, and vision changes are common reasons people seek help after a concussion. Dizziness may involve the vestibular system, visual motion sensitivity, balance control, or neck-related body position signals. Brain fog may happen when the brain is working harder to process information, focus, multitask, or tolerate stimulation.
Headaches may be connected to migraine-like changes, neck tension, eye strain, sleep problems, or sensory overload. Vision changes may involve blurry vision, difficulty focusing, eye fatigue, screen intolerance, or trouble tracking moving objects. These symptoms can make daily activities feel harder, even when the original injury was classified as mild.
When Persistent Symptoms May Need Neurological Rehabilitation
Persistent symptoms may need neurological rehabilitation when they continue to interfere with daily life, especially after the early recovery period. This may include ongoing dizziness, headaches, brain fog, motion sensitivity, balance problems, vision symptoms, fatigue, or trouble returning to work, school, driving, exercise, or normal routines.
Neurological rehabilitation may help by targeting the systems contributing to symptoms, such as balance, eye movement control, vestibular function, coordination, sensory processing, and nervous system regulation. At Cerebral Health, care is guided by objective testing and personalized treatment planning so patients can better understand what may be driving symptoms and what support may help them move toward improved daily function.
TBI and Concussion Treatment Options in San Jose & the Bay Area at Cerebral Health
Treatment after a concussion or mild TBI should be based on how the injury is affecting the brain, body, balance system, vision, and nervous system. At Cerebral Health, care begins with a detailed evaluation to better understand each patient’s symptoms, triggers, and daily challenges. This allows the team to create a personalized care plan that supports recovery and helps patients move toward better function.
Objective Testing for Brain, Balance, Vision, and Nervous System Function
Cerebral Health uses objective testing to evaluate how the nervous system is functioning after a concussion or mild TBI. A neurological exam in San Jose may include assessments of balance, coordination, eye movements, visual tracking, vestibular function, sensory processing, cognitive performance, and autonomic regulation. These findings help identify which systems may be contributing to symptoms such as dizziness, brain fog, headaches, motion sensitivity, fatigue, or visual discomfort.
Personalized Concussion and Mild TBI Care in San Jose, CA
Every concussion recovery is different, which is why care should not follow a one-size-fits-all plan. Some patients may struggle most with headaches and light sensitivity, while others may experience dizziness, brain fog, fatigue, balance problems, or screen intolerance. Cerebral Health provides personalized concussion treatment in San Jose designed around the patient’s symptoms, test findings, health history, and recovery goals.
Neurological Rehabilitation for Post-Concussion Symptoms
Neurological rehabilitation may help patients with lingering post-concussion symptoms by supporting brain-body communication, balance, visual function, coordination, and nervous system regulation. For patients searching for neurological rehabilitation near San Jose, Cerebral Health offers targeted care designed to address the specific systems involved in recovery. This may include vestibular exercises, eye movement training, balance work, sensory integration support, and other personalized rehabilitation strategies.
Support for Dizziness, Brain Fog, Headaches, and Motion Sensitivity
Post-concussion symptoms can affect work, school, driving, exercise, sleep, and everyday confidence. Cerebral Health supports patients who continue to experience dizziness, brain fog, headaches, motion sensitivity, visual discomfort, fatigue, or feeling overwhelmed in busy environments. Through a functional neurology in San Jose approach, care focuses on understanding how different parts of the nervous system are working together and where targeted support may be helpful.
How Cerebral Health Builds a Data-Informed Recovery Plan
Cerebral Health builds each recovery plan using objective findings, symptom patterns, and the patient’s real-life goals. This data-informed approach helps guide treatment decisions and allows care to be adjusted as the patient progresses. If you are recovering from a concussion or mild TBI and still dealing with lingering symptoms, Schedule a complimentary consultation with Cerebral Health to take the next step toward clearer answers and personalized support.
FAQs About TBI vs Concussion
Is a concussion a TBI?
Yes, a concussion is a TBI. More specifically, a concussion is usually considered a mild traumatic brain injury because it temporarily disrupts normal brain function after a bump, blow, jolt, fall, or hit to the body.
The word “mild” describes the injury category, not how the symptoms feel. A concussion can still cause headaches, dizziness, brain fog, nausea, vision problems, sleep changes, mood changes, and difficulty concentrating.
Is concussion a TBI or a separate injury?
A concussion is not separate from TBI. It is one type of TBI. TBI is the broader term that includes mild, moderate, and severe traumatic brain injuries.
A concussion usually falls under the mild TBI category. More serious TBIs may involve bleeding, bruising, swelling, torn tissue, or other structural damage.
Is TBI and concussion the same?
TBI and concussion are related, but they are not exactly the same. A concussion is a type of TBI, but TBI includes more than concussions.
Think of TBI as the larger category and concussion as one form within that category. This is why people often compare concussion vs TBI when trying to understand their diagnosis.
What is the difference between a TBI and a concussion?
The difference between a TBI and a concussion is that TBI is the broader injury category, while concussion is usually a mild form of TBI. A concussion often affects brain function without visible damage on standard imaging.
Moderate or severe TBIs may involve more serious findings, such as bleeding, swelling, bruising, skull fracture, loss of consciousness, or long-term neurological changes. The right diagnosis depends on symptoms, injury history, exam findings, and imaging when needed.
How is a concussion and TBI different?
A concussion and TBI are different mainly in scope and severity. A concussion is usually a mild TBI, while TBI can refer to mild, moderate, or severe brain injuries.
Concussion symptoms often include headache, dizziness, nausea, brain fog, light sensitivity, sound sensitivity, fatigue, and trouble concentrating. More serious TBIs may include these symptoms along with red flags such as seizures, repeated vomiting, weakness, numbness, slurred speech, worsening confusion, or trouble waking.
Is every TBI a concussion?
No, not every TBI is a concussion. Every concussion is typically considered a mild TBI, but TBIs can also include brain contusions, diffuse axonal injuries, brain bleeding, hematomas, penetrating injuries, and other traumatic injuries.
This distinction matters because different types of TBI may require different levels of care. Some need rest and symptom monitoring, while others may require emergency care, imaging, surgery, hospitalization, or long-term rehabilitation.
Can a concussion be serious?
Yes, a concussion can be serious. Although it is usually classified as a mild TBI, symptoms can still interfere with work, school, driving, exercise, sleep, mood, balance, and daily life.
A concussion should be evaluated if symptoms are worsening, persistent, or affecting normal activities. Seek urgent care if symptoms include repeated vomiting, severe or worsening headache, seizure, confusion, slurred speech, weakness, numbness, loss of consciousness, or trouble waking.
Can a concussion show up on imaging?
A concussion often does not show visible damage on standard CT or MRI scans. This does not mean the symptoms are not real. Many concussion symptoms are related to changes in brain function rather than obvious structural damage.
Imaging may still be recommended when a provider is concerned about bleeding, swelling, skull fracture, or another serious injury. Whether imaging is needed depends on the injury, symptoms, exam findings, and risk factors.
What is the difference between post-concussion syndrome and TBI?
TBI refers to the injury itself. Post-concussion syndrome refers to symptoms that continue after a concussion or mild TBI longer than expected.
Post-concussion syndrome may include headaches, dizziness, brain fog, fatigue, light sensitivity, sound sensitivity, sleep changes, mood changes, motion sensitivity, or vision problems. It is not a separate new injury, but rather a prolonged recovery pattern after a concussion.
When should you seek care after a head injury?
You should seek medical care after a head injury if you have symptoms such as headache, dizziness, nausea, confusion, balance problems, brain fog, vision changes, sleep changes, or symptoms that interfere with daily life. It is especially important to get checked if symptoms are getting worse or not improving.
Seek emergency care right away for severe or worsening headache, repeated vomiting, seizure, loss of consciousness, weakness, numbness, slurred speech, one pupil larger than the other, increasing confusion, unusual behavior, trouble walking, or difficulty waking. These signs may suggest a more serious TBI and should not be ignored.
