For many people, concussion symptoms improve steadily over the first days or weeks. For others, headaches, dizziness, fatigue, brain fog, visual changes, or sensitivity to light and sound continue long after the initial injury. When symptoms persist beyond the expected recovery period, this is commonly called post-concussion syndrome (PCS) or persistent post-concussive symptoms.
One of the most important things to understand is that PCS is not one single disorder. A concussion can affect different functions of the nervous system, so two people with the same diagnosis may have very different symptoms — and may need different approaches to care. The CDC notes that concussion symptoms can affect how a person feels, thinks, acts, and sleeps, and that symptoms differ from person to person. [1]
What Happens During a Concussion?
A concussion can occur after a bump, blow, or jolt to the head — or a hit to the body that makes the head and brain move quickly back and forth. The sudden motion can cause the brain to move or twist inside the skull, leading to chemical changes and stretching of brain cells. Loss of consciousness is not required for a concussion to occur. [2]
These changes can temporarily affect systems involved in balance, eye movements, sensory processing, autonomic regulation, cognition, sleep, and pain. For most people, symptoms gradually resolve. When they continue, a more useful question is often: what may still be driving the symptoms?
What Are the Symptoms of Post-Concussion Syndrome?
PCS can look very different from one person to another. Common symptoms may include:
Some people experience only a few symptoms, while others notice problems involving several systems at once. Headaches, dizziness, fatigue, sleep changes, concentration and memory problems, blurred vision, and light or noise sensitivity are among the symptoms recognized in current CDC and Mayo Clinic guidance. [1] [3]
Why Can Symptoms Persist?
Persistent symptoms do not necessarily mean that the brain simply has not healed. They can reflect ongoing dysfunction in one or more systems that normally work together to help us navigate our environment, regulate our bodies, process information, and move comfortably through the world. Often, more than one system is involved.
Vestibular system
Balance and spatial-orientation changes can contribute to dizziness, vertigo, motion sensitivity, nausea, and difficulty moving through visually busy environments.
Visual & oculomotor systems
Changes in eye tracking, focusing, convergence, or coordination between the eyes and brain can make reading, screens, driving, and visually complex settings more difficult.
Cervical spine
Concussions often occur alongside neck injuries. Sensory information from the muscles and joints of the neck can contribute to headaches, dizziness, balance challenges, and spatial disorientation.
Autonomic nervous system
Changes in autonomic regulation may overlap with fatigue, lightheadedness, heart-rate changes, temperature regulation, and difficulty tolerating exertion or standing.
Pain-processing pathways
Head and neck trauma can alter how pain signals are generated and processed, contributing to persistent headaches, facial or orbital pain, and increased sensitivity.
Cognitive & sensory networks
Difficulty filtering competing sensory information or sustaining attention can make crowds, driving, grocery stores, or even conversations unexpectedly exhausting.
Why Can MRI and CT Scans Be Normal?
It can be confusing to hear that a scan is normal when you do not feel normal. CT and MRI scans are important tools for identifying certain structural concerns, such as bleeding or fractures. A normal scan can be reassuring in that sense, but it may not explain ongoing dizziness, headaches, fatigue, visual symptoms, or cognitive difficulties. The CDC notes that a brain scan is not needed to identify every mild TBI or concussion and may be used when a clinician is concerned about bleeding after an injury. [2]
Rather than only asking, “Why have I not recovered from my concussion?” it may be more useful to ask, “What is still not functioning the way it should?”
Can You Continue to Improve?
Recovery is not always linear, and persistent symptoms can require a more individualized approach than the initial management of an acute concussion. Depending on the findings, rehabilitation may involve vestibular therapy, visual or oculomotor exercises, cervical rehabilitation, graded activity, autonomic regulation strategies, headache and sleep support, cognitive rehabilitation, and other targeted interventions. The appropriate plan depends on the person and the systems involved.
When to Seek Urgent Care
After a head injury, call 911 or seek emergency care immediately for danger signs such as a worsening headache that does not go away, repeated vomiting, weakness or numbness, seizures, slurred speech, unusual behavior, one pupil larger than the other, or increasing drowsiness or inability to wake the person. [1]
Concussion Care at Healing Response
Healing Response Acupuncture & Functional Neurology works with people experiencing persistent symptoms after concussion and mild traumatic brain injury. Our nervous system assessments look beyond a symptom list to consider the relationship among balance, eye movements, vestibular function, autonomic regulation, and cervical contributions that may shape an individual symptom pattern.
Care is individualized based on findings and may include integrative neuro-rehabilitation strategies, neuro-acupuncture, PEMF, and other supportive therapies. A detailed evaluation can be an important next step in understanding what may be contributing to persistent symptoms.
PERSISTENT CONCUSSION SYMPTOMS
A more complete look at your symptom pattern can help clarify the next step.
Schedule a free 15-minute consultation to learn whether Healing Response may be a good fit for your needs.
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