Have you noticed that your blood pressure is higher than usual after a concussion or head injury?
If you weren't dealing with high blood pressure before your injury, seeing elevated numbers afterward can understandably be concerning.
You may also be experiencing other symptoms such as:
Headaches
Dizziness
Fatigue
Brain fog
A racing heart
Exercise intolerance
Feeling worse when you stand or exercise
Your Doctor Says You're Fine, But You Still Don't Feel Right
You've seen your doctor. You've had your blood pressure checked, and perhaps you've been reassured that nothing serious appears to be wrong.
But you still don't feel like yourself.
Maybe your blood pressure has changed since your head injury. Maybe you're dealing with dizziness, headaches, unusual fatigue, a racing heart, or symptoms that get worse when you exercise or stand for too long.
When your tests come back reassuring but your symptoms continue, it's understandable to keep searching for answers. You want to understand what's happening and what you can do to feel better.
A reassuring medical evaluation is important, but it doesn't always explain every persistent symptom. Some people experience ongoing symptoms after a concussion that involve exercise tolerance, balance, vision, sleep, or the body's regulation of heart rate and blood pressure.
The key is to understand what may be contributing to your symptoms rather than assuming everything is caused by the concussion—or that nothing can be done because initial tests were normal.
Persistent or elevated blood pressure still deserves appropriate medical follow-up. The goal is to investigate potential causes while also addressing any ongoing concussion symptoms that may benefit from rehabilitation.
One possible contributor is autonomic dysfunction: changes in the way the nervous system regulates things such as heart rate and blood pressure.
Research suggests that autonomic changes can occur following mild traumatic brain injury, although the findings are variable and autonomic dysfunction is only one possible explanation for blood-pressure changes after a concussion.
So if your blood pressure has changed after a head injury, the important question isn't simply "Is my concussion causing my high blood pressure?"
It's "What could be contributing to this change, and what should I do about it?"
Let's look at what we know.
Can a Head Injury Cause High Blood Pressure?
A head injury can be associated with changes in blood pressure, but persistent high blood pressure should not automatically be attributed to the concussion.
How a Concussion May Affect Blood Pressure Regulation
If you've already been evaluated and told that nothing serious appears to be wrong, but your blood pressure or other symptoms have changed since your head injury, you may be wondering what explains the changes.
One possibility worth understanding is the autonomic nervous system.
Your autonomic nervous system helps regulate heart rate, blood pressure, and your body's response to standing, exercise, and other physical demands.
Research has found changes in autonomic function and cardiovascular responses in some people following mild traumatic brain injury. When this system isn't regulating these responses as efficiently as it should, some people experience symptoms such as dizziness, exercise intolerance, an unusually rapid heart rate, fatigue, or difficulty tolerating prolonged standing.
This may help explain why some people continue to experience symptoms after a concussion, even when routine medical examinations have been reassuring. Understanding how your body responds to activity and changes in position may provide useful clues about what is contributing to your symptoms.
One system that may help explain these changes is the autonomic nervous system, which regulates heart rate, blood pressure, and how your body responds to physical demands.
What Causes High Blood Pressure After a Head Injury?
There isn't one single cause. If you've noticed higher blood pressure after a concussion, several factors may be involved.
Autonomic Nervous System Changes
Changes in autonomic regulation have been reported following mild traumatic brain injury and may affect heart rate, blood pressure, and cardiovascular responses to exertion. This is one possible explanation for blood-pressure changes after a concussion, but it isn't the only one.
Pain and Headaches
Pain can temporarily raise blood pressure. If your concussion has resulted in frequent headaches, neck pain, or other discomfort, your blood pressure may be affected as part of your body's response to pain and stress.
This is one reason it's important to look at the whole picture rather than assuming the concussion itself is directly causing hypertension.
Stress and Poor Sleep
A concussion can disrupt your normal routine. You may be sleeping poorly, worrying about your symptoms, working less, exercising less, or feeling frustrated by your recovery. All of these can influence cardiovascular regulation.
Dehydration and Changes in Nutrition
Hydration can affect blood pressure and how you feel during physical activity. Rather than looking for one "concussion diet," focus on the basics:
Eat regular meals
Prioritize whole foods
Include adequate protein
Stay adequately hydrated
Avoid routinely skipping meals
If you have a medical condition that requires fluid, sodium, potassium, or other dietary restrictions, follow the recommendations of your healthcare provider rather than changing these on your own.
Reduced Activity
If you've significantly reduced your physical activity after a concussion, your cardiovascular system may be less conditioned than it was before your injury. This can contribute to exercise intolerance and changes in how your body responds to physical demands.
The answer isn't necessarily to jump back into your old workout routine. Gradual progression is usually the better approach.
What If My Blood Pressure Is High When I Exercise?
This is where blood pressure and concussion symptoms can become particularly confusing.
Exercise naturally causes changes in heart rate and blood pressure. But if relatively mild activity causes a disproportionate increase in symptoms, you may also be experiencing exercise intolerance. You might notice:
Your heart rate rises very quickly
You become dizzy
Your headache increases
You feel unusually fatigued
You develop brain fog
You feel shaky or unwell after exercise
The good news is that exercise doesn't necessarily need to be avoided. Current concussion guidance recommends a gradual return to physical activity rather than prolonged strict rest, with exercise intensity progressed according to an individual's response.
Should You Exercise If You Have High Blood Pressure After a Concussion?
For concussion recovery, appropriately prescribed aerobic exercise can be an important part of rehabilitation. The goal is not "push through your symptoms," and it isn't "don't exercise at all." The goal is to exercise appropriately.
The 2022 Amsterdam International Consensus Statement supports early, symptom-tolerated physical activity and individualized aerobic exercise progression after concussion. However, knowing that exercise can help is only the starting point. The type of exercise, intensity, duration, and progression all matter—and figuring out the right approach for your symptoms can be challenging without a structured plan.
Why You Can Feel Terrible After a Concussion Even When Tests Look Normal
You've seen your doctor. You've been told your tests look normal. So why do you still feel so bad?
Your heart races. You feel dizzy, exhausted, or shaky. Standing or exercising makes you feel worse, and some days you can't predict how you're going to feel.
You may think your blood pressure is the problem, when the symptoms you're experiencing may actually involve how your autonomic nervous system regulates your body's responses to activity and changes in position.
For many people with persistent concussion symptoms, autonomic dysfunction may be a significant missing piece of the puzzle. It can help explain why you feel unwell even when routine tests appear normal.
Why Treating the Whole Picture Matters
Recognizing the role of your autonomic nervous system is an important starting point. But knowing what's potentially contributing to your symptoms doesn't tell you exactly what to do about them.
Concussion recovery can involve several overlapping systems: exercise tolerance, autonomic regulation, vestibular function, vision, the neck, and sleep. These areas can influence how you feel day to day, and addressing them may require more than trying one strategy at a time.
You can spend hours searching online, collecting advice, and trying to piece everything together. But how do you know which strategies to prioritize, how to combine them, or how to progress your exercise without making your symptoms worse?
You shouldn't have to spend months searching the internet for answers. You don't have to keep figuring this out on your own.
That's why I created The Concussion Solution—a structured online program that guides you through key components of concussion rehabilitation, including exercise progression, autonomic retraining, vestibular and visual strategies, neck and headache strategies, sleep, and pacing.
Instead of leaving you to figure out how everything fits together, the program gives you a guided progression to follow at home.
If you're still struggling with persistent concussion symptoms and aren't sure what to work on next, learn how the program works.
FAQs
Can a concussion cause high blood pressure?
A concussion can be associated with changes in autonomic and cardiovascular regulation, including changes in blood-pressure responses. However, persistent high blood pressure has many possible causes and shouldn't automatically be attributed to a concussion.
Is high blood pressure normal after a concussion?
Temporary changes can occur after an injury, particularly in response to pain, stress, exertion, or other factors. Persistent elevated blood pressure should be evaluated rather than assumed to be a normal concussion symptom.
Can autonomic dysfunction cause high blood pressure after a concussion?
Autonomic dysfunction can affect cardiovascular regulation, and altered autonomic measures have been reported following mild traumatic brain injury. However, the relationship between autonomic dysfunction and specific blood-pressure changes varies among individuals.
Why is my heart rate high after a concussion?
Changes in autonomic regulation may contribute to an exaggerated cardiovascular response to physical activity in some people after a concussion. Exercise intolerance is also associated with several other possible factors.
Should I exercise if I have high blood pressure after a concussion?
Exercise can be an important part of concussion rehabilitation, but the appropriate intensity depends on your individual symptoms, cardiovascular health, and medical history. Current concussion guidance supports gradual, symptom-tolerated physical activity rather than prolonged strict rest.
Can blood pressure return to normal after a concussion?
It may, depending on what is causing the elevation. If your blood pressure remains elevated, it should be evaluated rather than assuming it will resolve as the concussion improves.
How long can blood pressure stay high after a head injury?
There isn't one predictable timeline. Blood pressure can be affected by many factors, and persistent elevation should be assessed by a healthcare professional.
What should I do if my blood pressure is high after a concussion?
Monitor your readings, discuss persistent elevations with your healthcare provider, and don't make medication changes on your own. If you also have persistent concussion symptoms, addressing exercise tolerance, sleep, activity levels, and other potential contributors may be part of a broader rehabilitation plan.
You Don't Have to Keep Guessing What to Do Next
If you're tired of trying to figure out which symptoms are connected and what you should be doing next, The Concussion Solution gives you a structured path forward.
It guides you through exercise progression, autonomic retraining, vestibular and visual strategies, neck and headache strategies, sleep, pacing, and other components of concussion recovery—so you're not left trying to piece everything together yourself.
Related Concussion Recovery Articles
If you're experiencing blood-pressure changes along with other persistent concussion symptoms, these articles may help:
Post-Concussion Autonomic Dysfunction: Symptoms, Causes & What Helps: Autonomic regulation, exercise intolerance, dizziness, and related symptoms
Why Does Exercise Make My Concussion Symptoms Worse?: Understanding exercise intolerance and how to approach exercise progression
POTS and Concussion: How Blood Pressure and Heart Rate Changes Can Affect Recovery: Orthostatic symptoms and the relationship between POTS and concussion
Why Do I Still Have Concussion Symptoms Months Later? Why symptoms can persist and why multiple systems may contribute
