How Concussions Affect Mental and Physical Health: A Clinical Reasoning Framework for Rehabilitation Professionals

A concussion does not affect only one part of the brain or one isolated symptom category.

For many patients, concussion recovery involves changes in cognition, mood, sleep, headache, dizziness, balance, visual tolerance, exertional tolerance, cervical function, and emotional regulation. That is why concussion rehabilitation requires more than simply asking, “Do you still have symptoms?”

It requires clinical reasoning.

As rehabilitation professionals, we need to recognize that concussion symptoms often overlap across multiple systems. A patient’s headache may not have a single cause. Dizziness may not always be vestibular. Emotional changes may be related to neurophysiological recovery, sleep disruption, stress, pre-existing mental health history, symptom burden, or all of the above.

The goal is not to overcomplicate concussion care. The goal is to evaluate the right systems, identify the likely contributors, and build a recovery plan that matches the patient in front of us.

Concussions Can Affect Both Mental and Physical Health

The CDC lists physical symptoms such as headache, dizziness, balance problems, fatigue, nausea or vomiting, light/noise sensitivity, and vision problems, as well as emotional symptoms such as anxiety, irritability, feeling more emotional, and sadness after mild TBI or concussion.

For clinicians, the important point is this: these symptoms are real, common, and clinically meaningful.

They should not be dismissed as “just stress,” “just anxiety,” or “just part of recovery.” At the same time, they should not automatically be treated as if they all come from one source.

A systems-based approach helps us avoid both errors.

Emotional Changes After Concussion Are Common

Many patients feel emotionally different after a concussion.

They may describe being more anxious, frustrated, sad, irritable, tearful, or overwhelmed. Some feel like their emotional responses are bigger than usual. Others describe feeling like they “do not feel like themselves.”

This can be especially distressing for patients and families because emotional symptoms can feel personal. Patients may worry they are weak, failing, or “not handling it well.”

A better clinical message is:

Emotional symptoms after concussion are common, valid, and worth addressing.

The brain plays a role in attention, arousal, sleep, emotional regulation, and stress response. When those systems are disrupted after injury, emotional regulation may become harder for a period of time.

The CDC also emphasizes that children and students may show behavior changes, sadness, irritability, or need more help than usual after concussion, and return-to-school guidance includes emotional support strategies such as identifying an adult the student can talk to if overwhelmed.

For the clinician, this means emotional symptoms should be screened, normalized, monitored, and integrated into the recovery plan.

Pre-Existing Mental Health History Can Influence Recovery

Some patients are at higher risk for a more complicated or prolonged recovery trajectory.

A history of anxiety, depression, ADHD, migraine, sleep difficulty, or other health factors may influence symptom burden and recovery time. This does not mean the patient will not recover. It means they may need more targeted support and closer monitoring.

A systematic review found that pre-injury mental health problems appear to increase the risk of worse clinical outcomes after sport-related concussion. A 2024 study also reported that pre-existing mental health conditions were associated with increased emotional symptom burden after concussion, with greater burden seen when more than one mental health diagnosis was present.

Clinically, this should change how we interview and educate patients.

Instead of asking only, “Do you have a history of concussion?” we should also ask about:

• Anxiety or depression history

• ADHD or learning differences

• Migraine history

• Sleep difficulty

• Prior prolonged recovery

• Current stressors

• School, work, or sport demands

• Access to support

This information helps frame risk, education, pacing, referrals, and treatment prioritization.

Physical Symptoms After Concussion May Come From Multiple Systems

Concussions can also produce a wide range of physical symptoms.

Headache is one of the most common, but patients may also report neck pain, dizziness, nausea, imbalance, visual sensitivity, fatigue, or head pressure. Persistent headaches after concussion may present with migraine-like features or tension-type features, and neck injury can contribute to headache symptoms.

Dizziness can also be highly variable.

Some patients describe lightheadedness. Others feel off balance. Others experience motion sensitivity, visual motion sensitivity, or true vertigo. Vertigo may create a spinning sensation and can be associated with nausea or vomiting.

From a clinical reasoning standpoint, the symptom label is only the starting point.

A patient who says, “I’m dizzy,” may need screening of:

• Vestibular function

• Oculomotor control

• Cervical contribution

• BPPV

• Autonomic/exertional intolerance

• Visual motion sensitivity

• Migraine-associated dizziness

• Anxiety or threat response

• Medication effects

• Sleep and fatigue contributors

The symptom matters, but the source matters more.

The Same Symptom Can Come From Different Clinical Drivers

One of the most important concepts in concussion rehabilitation is that the same symptom can come from different body systems.

For example, headache after concussion may be influenced by:

• Cervical spine dysfunction

• Migraine physiology

• Oculomotor strain

• Vestibular sensitivity

• Exertional intolerance

• Sleep disruption

• Stress and emotional load

• Medication overuse

• Dehydration or nutrition factors

Likewise, dizziness may be vestibular, cervical, autonomic, visual, migraine-related, anxiety-amplified, or multifactorial.

This is why two patients with the same symptom may need completely different treatment plans.

One patient with a headache may need cervical manual therapy and deep neck flexor progression. Another may need exertional testing and sub-symptom threshold aerobic exercise. Another may need oculomotor and visual tolerance progression. Another may need migraine education, sleep support, and referral coordination.

A symptom inventory tells us what the patient is experiencing.

A clinical exam helps us understand why.

Clinical Application: A Systems-Based Evaluation Approach

For healthcare professionals, concussion care should move beyond symptom tracking alone.

A practical evaluation should include a structured screen of the major systems that commonly contribute to persistent symptoms.

1. Symptom Profile and History

Start with a detailed history:

• Mechanism of injury

• Symptom onset and progression

• Prior concussion history

• Migraine history

• Mental health history

• ADHD or learning history

• Sleep pattern changes

• School, work, or sport demands

• Current activity tolerance

• Red flags or worsening symptoms

This gives context to the exam and helps identify risk factors early.

2. Cervical Spine Screening

The neck is commonly involved in concussion mechanisms, especially when there is acceleration, deceleration, whiplash, fall, or collision.

Assess:

• Cervical ROM

• Upper cervical mobility

• Palpation sensitivity

• Cervical motor control

• Deep neck flexor endurance

• Cervicogenic headache features

• Cervical contribution to dizziness

3. Vestibular and Oculomotor Screening

Vestibular and visual symptoms can strongly influence school, work, sport, driving, reading, and screen tolerance.

Assess:

• Smooth pursuits

• Saccades

• Vergence/convergence

• Accommodation

• VOR

• VOR cancellation or visual motion sensitivity

• Dynamic visual acuity

• Balance and gait with head movement

4. BPPV Screening When Indicated

If the patient reports vertigo, positional dizziness, spinning, or dizziness provoked by rolling in bed, looking up, bending over, or changing position, BPPV should be considered.

Screen when appropriate using positional testing such as Dix-Hallpike and supine roll testing.

5. Autonomic and Exertional Tolerance

Some patients experience symptom increase with physical activity due to autonomic or exertional intolerance.

Consider graded exertional assessment when appropriate, such as treadmill or bike testing, to help guide sub-symptom aerobic exercise prescription.

6. Sleep and Recovery Behaviors

Sleep disruption can amplify headache, mood symptoms, fatigue, cognitive symptoms, and exercise intolerance.

Ask about:

• Sleep onset

• Sleep maintenance

• Total sleep time

• Napping

• Screen use

• Schedule consistency

• Caffeine use

• Daytime fatigue

7. Emotional Health and Referral Needs

Emotional changes should be screened and monitored throughout recovery.

Clinicians should normalize these symptoms while also recognizing when referral is needed. Worsening anxiety, depression, hopelessness, panic, severe irritability, or safety concerns should prompt appropriate referral and communication with the medical team.

Key Takeaways for Clinicians

• Concussion can affect both mental and physical health.

• Emotional changes after concussion are common and should be taken seriously.

• Pre-existing anxiety, depression, ADHD, migraine, or sleep issues may increase risk for a more complex recovery.

• Headache, dizziness, nausea, and neck pain can come from multiple systems.

• The same symptom may require different treatment in different patients.

• Symptom checklists are helpful, but they are not enough by themselves.

• A structured, systems-based clinical exam allows for more targeted treatment.

• Early education, appropriate screening, and individualized treatment planning can improve confidence for both the patient and clinician.

FAQ: Concussion, Mental Health, and Physical Symptoms

Can a concussion cause anxiety or emotional changes?

Yes. Patients may feel more anxious, irritable, sad, frustrated, overwhelmed, or emotional after concussion. These symptoms are common and should be monitored as part of recovery. Emotional symptoms that worsen, persist, or raise safety concerns should be addressed with the appropriate healthcare team.

Can pre-existing anxiety or depression make concussion recovery longer?

It can. Research suggests that pre-injury mental health conditions may increase the risk of greater symptom burden or worse clinical outcomes after concussion. This does not mean the patient will not recover, but it may indicate the need for a more individualized plan and closer follow-up.

Why do some patients have headaches after concussion?

Post-concussion headache can have multiple contributors, including migraine physiology, cervical dysfunction, visual strain, vestibular sensitivity, exertional intolerance, sleep disruption, and stress. This is why headache treatment should be based on clinical examination rather than symptom label alone.

Is dizziness after concussion always vestibular?

No. Dizziness can come from vestibular dysfunction, BPPV, cervical involvement, autonomic intolerance, visual motion sensitivity, migraine, anxiety, medication effects, or a combination of factors. A structured exam helps identify the most likely drivers.

When should a patient be referred for additional care?

Referral should be considered when symptoms are worsening, red flags are present, emotional symptoms are severe or persistent, recovery is not progressing as expected, or the patient requires care outside the clinician’s scope. Concussion care is often best delivered through a coordinated team approach.

Conclusion: Concussion Care Requires More Than Symptom Management

Concussion recovery is not just about waiting for symptoms to go away.

It requires understanding how the brain, body, neck, vestibular system, visual system, autonomic system, sleep, and emotional health may interact after injury.

For rehabilitation professionals, the key is not to treat every concussion the same way. The key is to use a structured clinical reasoning process to identify the patient’s primary symptom drivers and build a plan that fits their presentation.

Concussions can affect the mind and the body. But with the right evaluation, the right education, and the right treatment strategy, patients can move forward with more confidence and a clearer path to recovery.

Want to improve your clinical confidence with concussion evaluation and treatment?

Concussion Spot Education provides practical, evidence-informed concussion, vestibular, and headache rehabilitation training for healthcare professionals.

Explore our concussion rehabilitation courses here, clinical toolkits here, and certification pathway here to build a more structured system for helping patients recover after concussion.