Written by Kaylee Blair, Concussion Specialist & Program Coordinator at NCX Brain Recovery. Clinically reviewed by Justin Pope, Co-Founder / Neuro Occupational Therapist / Clinical Development. Published May 5, 2026 · Last updated May 2026.
May is Mental Health Awareness Month — a season when many people pause and ask whether what they’ve been carrying is more than they should be carrying alone. For some, that question leads to therapy, medication, or a long-overdue conversation with a loved one. For others, it leads to something quieter and more confusing: the sense that something is off in a way they can’t quite name, and that the explanations they’ve been given haven’t fully fit.
Maybe you’ve been told it’s anxiety. Maybe it’s been called depression, burnout, or stress. Maybe you’ve added therapy, medication, breathing apps, supplements, magnesium, and meditation — and you still feel like you’re white-knuckling your way through your days.What if part of the reason none of it has fully worked is because the underlying issue isn’t only mental health? What if it’s also a brain injury that no one ever caught?
Quick Answer
Concussion symptoms can be misdiagnosed as anxiety or depression because the conditions share many overlapping signs: racing thoughts, sensory overwhelm, fatigue, sleep disruption, and emotional reactivity. In many cases, what shows up after a concussion really is anxiety — but the cause is physiological rather than purely psychological. That’s an important distinction, because it means traditional mental health support may help, while targeted brain rehabilitation may be needed to fully address what’s driving the symptoms.
Key Takeaways
- Possible underlying drivers include autonomic dysregulation, disrupted neurovascular coupling, vision and vestibular issues, and broken sleep architecture — all of which may respond to targeted brain rehabilitation.
- Concussions are frequently undiagnosed, and post-concussion symptoms can overlap so closely with anxiety and depression that the conditions are often confused.
- In many cases, what shows up after a concussion really is anxiety — but the cause is physiological, which means mental health treatment alone may not fully resolve it.
- Seven symptoms most commonly mistaken for anxiety or depression: racing thoughts, fatigue, sensory overwhelm, sleep disruption, irritability, brain fog, and heart palpitations.
- Pre-existing anxiety or depression can be significantly worsened by a concussion or post-concussion syndrome, even when those conditions were well-managed before.
When “Just Anxiety” Isn’t the Whole Story
Concussions are often underdiagnosed — many people walk away from a fall, car accident, or sports collision without ever being evaluated. Some never even realize a brain injury occurred at all, especially when there was no direct hit to the head. Compounding the issue: the symptoms of post-concussion syndrome can overlap closely with the symptoms of generalized anxiety, depression, and burnout. A scoping review published in Frontiers in Neurology found that anxiety, depression, irritability, and difficulty concentrating are commonly present in both persistent post-concussion symptoms and common psychiatric conditions — which can make the two genuinely hard to tell apart without specialized assessment.
If you bumped your head years ago — fell off a horse in high school, rear-ended someone in a parking lot, slipped on the ice, got knocked around delivering a baby, or took a soccer ball to the face at a kid’s game — and the symptoms slowly crept in afterward, you are far from alone. And if your doctor’s first instinct was to write a referral for therapy or recommend a medication, that wasn’t because they were dismissive. It’s because the medical system has been slow to catch up to what an unhealed brain injury can look like in real life.
That gap is exactly what our Neuro Occupational Therapists Nate and Justin dig into in Episode 1 of the Brain Bros Podcast — the one we point patients to most often when they’re still in that “I’m not crazy, am I?” stage. They walk through why MRIs can come back normal even when something is clearly off, why symptoms can show up days or weeks after an injury, and why “living with it” and actually recovering can be two different things. If you’re still piecing it together, that’s a good place to start.
A Clinical Note: It Can Genuinely Be Anxiety — The Cause Is What Differs
It’s worth pausing here on the language, because this is where a lot of confusion happens. When someone develops anxiety symptoms after a concussion or while dealing with post-concussion syndrome, what they’re experiencing often really is anxiety in the clinical sense. In the early stages, it may look like an acute anxiety episode tied directly to the injury. If those symptoms aren’t addressed and they linger over time, they can evolve into something that clinicians might diagnose as Generalized Anxiety Disorder (GAD).
So the answer isn’t always “it’s not anxiety, it’s a brain injury.” Sometimes the more accurate framing is: “it is anxiety — and the cause is a brain injury that hasn’t been addressed.” That distinction matters because it shapes what’s likely to help. Mental health treatment can be a real and valuable part of the picture. It’s just that, on its own, it may not fully resolve symptoms when an unaddressed brain injury is contributing to what’s keeping the nervous system stuck.
There’s another piece of this that often goes unspoken: if someone already had anxiety or depression before their concussion, the injury can significantly exacerbate those pre-existing symptoms. Patients sometimes arrive at NCX wondering why their anxiety, which they had managed well for years, suddenly became unmanageable after a fall or car accident. The injury didn’t cause the anxiety in those cases — but it can absolutely make it worse, and addressing the brain often helps things return closer to baseline.
7 Concussion Symptoms That Can Be Misdiagnosed as Anxiety or Depression
These are patterns we see often with patients who arrive at NCX after months or years of being told it was “just anxiety” or “just depression”:
1. Racing thoughts and a brain that won’t shut off
After a concussion, the brain can lose some of its ability to filter and downshift. Thoughts may pile up, decisions can feel impossibly heavy, and the moment you lie down at night your mind sprints. This is frequently labeled anxiety — but for some people it may actually be a brain that is having trouble regulating its own activation.
2. Bone-deep fatigue and crashing after small tasks
Reading a few emails. A trip to the grocery store. A simple birthday party. These shouldn’t wipe out an entire day. When they do, it can be because of disrupted neurovascular coupling — the brain may not be efficiently bringing blood and oxygen to the regions doing the work, so even light cognitive demand can burn through your reserves quickly.
3. Sensory overwhelm in stores, restaurants, and crowds
Fluorescent lights, background music, kids running past, multiple conversations — and suddenly your heart is racing and you need to leave. This is one of the most commonly misdiagnosed concussion symptoms because it can look identical to a panic attack. The actual cause may be visual and vestibular dysfunction rather than a psychological response to the environment.
4. Disrupted sleep — falling asleep, staying asleep, or both
Sleep is when the brain repairs itself. After a concussion, the architecture of sleep can be disrupted, leading to that maddening pattern of being exhausted but wired, or sleeping for nine hours and waking up unrefreshed. Every other symptom on this list tends to get worse when sleep is broken.
5. Irritability and emotional reactivity that feels out of character
You used to be patient. Now you snap over small things and feel terrible about it for hours. The emotional regulation centers of the brain are tied to brain stem function, autonomic regulation, and prefrontal control — all of which can be affected by even a “mild” concussion. This shift can also strain your closest relationships, which is something many of our patients carry quiet guilt about long before they understand what may be happening in their brain.
6. Brain fog and word-finding trouble
You walk into rooms and forget why. The word for “refrigerator” disappears mid-sentence. You re-read the same paragraph three times. This often gets brushed off as anxiety, depression, ADHD, or perimenopause — but in many of our patients, it can be the cognitive signature of an unaddressed brain injury.
7. Heart palpitations, dizziness, and chest tightness
These can be classic symptoms of autonomic nervous system dysregulation — the body stuck in a low-grade fight-or-flight loop. They can feel like anxiety because the physiology is similar, but the root cause may be a brain that has lost some of its ability to keep the nervous system in balance.
Who Tends to Get Missed Most Often
Anyone can have a concussion missed or misdiagnosed, but a few groups tend to fall through the cracks more often than others. Research has shown that women may experience more severe and longer-lasting concussion symptoms than men. A TRACK-TBI cohort study published in JAMA Network Open followed 2,000 patients with mild traumatic brain injury and found that, twelve months after injury, women still reported significantly worse cognitive and somatic symptoms than men — with the gap most pronounced for women aged 35 to 49. There may be biological reasons for this, including differences in neck strength, hormonal fluctuations, and how blood flow is regulated in the brain. There are also cultural patterns at play.
People in this position often:
- Internalize all of that and start to wonder if they’re imagining it.
- Minimize the original injury — “It wasn’t that bad, I didn’t even go to the hospital.”
- Push through symptoms because life doesn’t pause for work, family, and everything in between.
- Get told their symptoms are anxiety, depression, hormonal, perimenopausal, or “just a phase.”
A note for mothers, and the people who love them
With Mother’s Day landing right in the middle of Mental Health Awareness Month, this season often surfaces a particular kind of quiet weight. Many mothers we see at NCX have been told their fatigue is burnout, their forgetfulness is “mom brain,” their irritability is hormones, and their emotional flatness is just stress. They’ve been carrying it — sometimes for years — while quietly wondering if something else is going on. If any of that sounds familiar, you’re in good company — and there may be answers worth exploring that no one has thought to put on the table yet.
By the time many of our patients land in the clinic, they have been through several specialists and come away with similar advice each time: rest more, manage your stress, see a therapist, try this medication. Therapy and medication can absolutely help — and many of our patients continue to benefit from them. But for some people, they may not be enough on their own, because the underlying brain injury is still sitting there untreated and may still be driving the symptoms. Waiting and healing aren’t the same thing — and the longer that gap goes unaddressed, the more compensatory patterns the brain may layer on top of it.
Wondering if this could be you?
Take our 2-minute concussion quiz for personalized feedback on whether your symptoms could trace back to a brain injury.
The Real Reason Your Brain May Feel This Way
The emotional changes after concussion that get mistaken for anxiety or depression often trace back to specific, measurable physiological problems — not just psychological ones. And research from Penn State has shown that when concussion and depression occur together, the symptoms of both conditions can intensify and brain connectivity can become more disrupted than with either condition alone — which is part of why “treat the anxiety and ignore the brain injury” can leave people stuck. The four physiological drivers we see most often in our patient population are:
Autonomic Nervous System Dysregulation
The body can be stuck in fight-or-flight even when nothing is wrong. This can drive a racing heart, shallow breathing, sleep disruption, and that constant low hum of overwhelm. It tends to be physiology, not personality.
Disrupted Neurovascular Coupling
When the brain has trouble efficiently calling for blood flow on demand, ordinary cognitive tasks — reading, conversation, decision-making — can become much more expensive. You may feel exhausted because your brain is, quite literally, working harder than it should have to.
Vision and Vestibular Disruption
The eye-brain-balance system is one of the most fragile after a concussion. When it doesn’t recalibrate, busy environments can stop feeling neutral and start feeling threatening — which the brain may interpret as anxiety.
Sleep Architecture Changes
The brain restores itself during specific stages of sleep. When those stages are disrupted, every other symptom on this list can compound night after night.
None of these are problems you can think your way out of. They aren’t signs of weakness, anxiety, or being too sensitive. They are physiological problems that often respond to physiological solutions.
What Can Actually Help (And Why “Just Manage Your Anxiety” Sometimes Isn’t Enough)
Talk therapy, deep breathing, mindfulness, and medication can all genuinely help — and many of our patients continue to benefit from them. But they may only be able to do so much when the underlying issue is a brain that hasn’t healed. That’s why some people feel like the relief is partial, slow, or seasonal: the root cause hasn’t yet been touched.
Real recovery from a missed or undertreated concussion can take targeted, intensive rehabilitation that works on the actual systems involved:
- Cardiovascular re-training to support healthy neurovascular coupling
- Multisensory integration to retrain the visual, vestibular, and proprioceptive systems
- Autonomic nervous system regulation work to help bring you out of the fight-or-flight loop
- Cognitive rehabilitation to help rebuild attention, memory, and processing speed
- Strategic brain breaks that help teach the nervous system how to settle
That’s the kind of work we do at NCX Brain Recovery — Utah’s only OT-led intensive concussion rehabilitation program. Patients spend one to two weeks with us, six to seven hours a day, working through targeted protocols designed to address each of those underlying systems — leaving people with meaningful symptom relief and a path forward that finally addresses the brain itself, not just the anxiety, depression, or burnout that have been getting most of the attention.
A Real Story From a Real Family
“My son suffered a concussion during football last year. Within three months he had been diagnosed with several personality-altering conditions. We didn’t think to tie it to the concussion at first. We saw a therapist and tried so many different medications. It seemed they’d help for a couple weeks, and then they wouldn’t… after one week of intensive therapy, he was completely different. He was happy, smiling, conversational, and excited about life.”
— Cynthia Atchley, NCX Brain Recovery patient family
You Don’t Have to Keep Pushing Through
If something inside you has been quietly whispering that this might not just be anxiety or depression — listen to it. You know your brain better than anyone. You know what shifted after that fall, that car accident, that hit, or that long stretch of feeling not-quite-yourself. You know that “toughing it out” hasn’t been working.
This Mental Health Awareness Month, give yourself permission to ask the question no one else may have asked you yet: What if it’s also my brain?
A free consultation with one of our Neuro Occupational Therapists can help you find out. There’s no obligation and no pressure — just a real conversation about what you’ve been experiencing and whether NCX Brain Recovery could be a fit. You’ve spent long enough wondering. You deserve answers.
Schedule your free consultation with NCX Brain Recovery today.
Frequently Asked Questions
Can a concussion cause anxiety years later?
Yes, it’s possible. In the early stages after a concussion, anxiety symptoms can present as an acute anxiety episode tied directly to the injury. If those symptoms aren’t addressed and they linger, they can evolve over time into what clinicians might diagnose as Generalized Anxiety Disorder (GAD). Disrupted autonomic regulation, sleep changes, and visual-vestibular dysfunction can all contribute to ongoing feelings of anxiety long after the head injury itself has been forgotten.
Why do I feel anxious after a head injury?
Concussions can disrupt the brain systems that regulate the nervous system — meaning the body may stay stuck in a low-grade fight-or-flight response. The racing heart, shallow breathing, and sense of overwhelm can feel exactly like anxiety, but the root cause may be physiological rather than purely psychological.
Can post-concussion syndrome be misdiagnosed as anxiety or depression?
Yes — and it can happen often. Post-concussion syndrome and anxiety or depression can share many of the same symptoms: racing thoughts, sensory overwhelm, fatigue, sleep disruption, and irritability. Without specialized assessment, some patients are diagnosed with anxiety or depression alone and never have their underlying brain injury identified or addressed.
How do I know if my anxiety might be from a brain injury?
Look at the timeline. If your symptoms started or significantly worsened after a head injury, fall, car accident, or whiplash event, the brain may be part of the picture. It’s also worth considering that brain injuries can occur without a direct hit to the head — whiplash, blast exposure, near-drownings, certain illnesses, lack of oxygen, and repeated subconcussive impacts (like in soccer or hockey) can all affect the brain in ways that may show up later. A free consultation with a Neuro Occupational Therapist can help identify whether targeted brain rehabilitation might address symptoms that anxiety or depression treatments haven’t fully resolved.
What might help post-concussion anxiety more than medication alone?
Medication can manage symptoms, but on its own it may not address the underlying brain injury that could be driving them. Targeted rehabilitation that addresses neurovascular coupling, autonomic regulation, vision-vestibular integration, and sleep architecture can sometimes produce meaningful improvement when therapy and medication alone have plateaued.
Can a concussion make existing anxiety or depression worse?
Yes — this is something we see often. When someone already has anxiety or depression and then experiences a concussion or post-concussion syndrome, the injury can significantly exacerbate those pre-existing symptoms. People who had managed their anxiety or depression well for years sometimes find it suddenly becomes unmanageable after a fall, car accident, or other head injury. The brain injury doesn’t necessarily cause the underlying condition in these cases — but it can absolutely make it worse, and addressing the brain often helps things return closer to baseline.
Do women experience worse concussion symptoms than men?
Often, yes. Multiple studies, including the JAMA Network Open TRACK-TBI study, show women tend to report more severe and longer-lasting symptoms after mild traumatic brain injury — particularly women between 35 and 49. Possible biological factors include differences in neck strength, hormonal fluctuations, and cerebral blood flow regulation.
Sources & Further Reading
- Mental Health Outcomes Across the Lifespan in Individuals With Persistent Post-Concussion Symptoms — Frontiers in Neurology
- Association of Sex and Age With Mild Traumatic Brain Injury–Related Symptoms: A TRACK-TBI Study — JAMA Network Open
- Co-occurrence of Depression and Concussions Amplify Symptoms of Both Conditions — Penn State
Related Reading From NCX
- The Invisible Injury: Why Concussions Are So Often Missed
- How Concussion Can Affect Relationships
- Post-Concussion Syndrome Treatment: 5 Science-Backed Elements for Recovery
About the Author
Kaylee Blair is the Concussion Specialist and Program Coordinator at NCX Brain Recovery in Springville, Utah. After recovering from her own brain injuries, she became passionate about helping others navigate concussion and post-concussion syndrome. She has a background in behavioral science, neuro-linguistic programming, and vision therapy, and serves on the Utah Brain Injury Council.
Clinically reviewed by Justin Pope, Co-Founder of NCX Brain Recovery and a Neuro Occupational Therapist specializing in post-concussion syndrome and traumatic brain injury rehabilitation. Justin’s clinical work focuses on multisensory integration therapy and evidence-based treatments that help patients reclaim their lives after brain injury.