Les exercices vestibulaires vous donnent le vertige : quand les ajuster

Navigating Dizziness During Vestibular Therapy

Starting a vestibular rehabilitation program is a highly effective step toward recovery, but the process can sometimes feel discouraging. If you are currently asking yourself, “Why are my vestibular exercises making me dizzy?”, you are not alone. It is incredibly common to experience a temporary spike in symptoms like dizziness, nausea, or brain fog when you first begin training your brain and eyes. Understanding why this happens—and knowing exactly when to adjust your routine—is critical for a safe and successful recovery from concussions or vestibular disorders.

Is it normal for vestibular exercises making me dizzy to happen?

Yes, it is completely normal to feel mildly to moderately dizzy immediately after performing vestibular exercises. Vestibular rehabilitation works by intentionally fatiguing your visual and balance systems to force the brain to adapt—a process known as neuroplasticity. When you perform exercises like VOR (Vestibular-Ocular Reflex) training, you are essentially asking your brain to process conflicting sensory signals. This deliberate sensory mismatch temporarily triggers dizziness, but it is the exact stimulus your brain needs to recalibrate and heal over time.

Why do VOR exercises cause dizziness?

VOR exercises cause dizziness because they directly stimulate and challenge the vestibular system in your inner ear. During a VOR x1 or VOR x2 exercise, you are keeping your eyes locked on a stationary or moving target while moving your head. This action creates a temporary sensory conflict between what your inner ear senses (movement), what your eyes see (focus), and what your body feels (proprioception). The resulting dizziness is simply your brain working overtime to synchronize these signals and stabilize your gaze.

How much symptom increase is too much during vestibular rehab?

A symptom increase of 2 to 3 points on a 10-point scale during or immediately after vestibular rehab is generally considered safe, acceptable, and therapeutically necessary. However, an increase of 4 points or more is considered too much. Furthermore, if your dizziness, headache, or nausea escalates to the point of causing vomiting, severe imbalance, or an inability to concentrate, you have pushed your nervous system too far. According to established concussion and vestibular clinical practice guidelines, therapy should challenge the patient but remain tolerable.

When should vestibular exercises be made easier?

You should make your vestibular exercises easier when your symptoms consistently increase by more than 3 points on a 10-point scale, or if your dizziness takes longer than 15 to 20 minutes to subside after your session. You should also dial back the difficulty if you experience loss of balance, severe nausea, or intense headaches. Modifying your routine is not a step backward; it is a clinical requirement to keep your brain in a state where it can successfully adapt without triggering a “symptom spike” or nervous system overload.

Is it normal to feel worse after vestibular therapy before feeling better?

Yes, a temporary period of feeling worse before feeling better is highly common in the early stages of vestibular therapy. Because your brain has been avoiding certain movements to protect itself from dizziness, introducing exercises suddenly floods your nervous system with stimuli. This cognitive and sensory load can cause an initial spike in fatigue, brain fog, and dizziness. However, if this worsening is mild and managed correctly, it typically resolves within the first few weeks as your brain builds tolerance. If the worsening is severe, the exercises must be modified immediately.

What are the common vestibular exercises side effects?

The most common vestibular exercises side effects are directly related to the visual and balance systems being fatigued. These side effects include:

• Dizziness or vertigo
• Mild to moderate headaches
• Nausea or motion sickness
• Eye strain or fatigue
• Brain fog or difficulty concentrating
• Lightheadedness
• Increased sweating

These side effects should be temporary, generally lasting 15 to 30 minutes before gradually returning to your baseline.

How long should dizziness last after doing vestibular physical therapy?

Post-exercise dizziness should typically subside within 15 to 30 minutes of resting. If your dizziness, headache, or eye strain persists for several hours or impacts your ability to sleep, it is a strong indicator that your exercise parameters (speed, duration, or movement complexity) are too aggressive. To prevent prolonged symptoms, pace your exercises, take adequate breaks, and scale back the intensity in your next session.

What should I do if I experience dizziness during balance exercises?

If you experience dizziness during balance exercises, you should immediately stop the active movement, find a stable surface to hold onto, and sit down safely. Close your eyes if visual motion is overwhelming, take slow, deep breaths, and focus on a single stationary point in your visual field to help ground your brain. Always ensure you are performing balance training in a safe environment, such as a corner with a sturdy chair nearby, to prevent falls.

Are there “red flag” symptoms I should watch out for during vestibular training?

Yes. While mild dizziness and fatigue are normal, certain “red flag” symptoms require immediate medical attention. Stop all exercises and contact a healthcare provider or emergency services if you experience:

• Sudden, severe, or “thunderclap” headaches
• Numbness, tingling, or weakness in the face, arms, or legs
• Difficulty speaking, slurred speech, or confusion
• Sudden double vision, vision loss, or drooping eyelids
• A sudden change in hearing or new, severe ringing in the ears (tinnitus)
• Loss of consciousness or fainting
• Chest pain or shortness of breath

How can I safely adjust my exercises if I am feeling dizzy?

If your vestibular exercises are making you too dizzy, you can safely adjust them by modifying one variable at a time. Try the following progressions:

1. Reduce the speed: Move your head or eyes much slower during VOR or smooth pursuit exercises.
2. Decrease the duration: Perform the exercise for 30 seconds instead of 60 seconds, and take a longer rest period between sets.
3. Change your posture: Perform exercises in a seated, supported position rather than standing.
4. Reduce visual complexity: Perform the exercise against a blank wall rather than a busy background, or eliminate optokinetic training until your baseline dizziness improves.

Key Takeaways on Managing Vestibular Symptoms

• Feeling dizzy during or immediately after vestibular therapy is a normal response to neuroplasticity and sensory adaptation.
• A temporary symptom increase of 2 to 3 points is expected; an increase of 4 or more points requires you to adjust your exercises.
• Dizziness should resolve within 15 to 30 minutes post-exercise. Prolonged symptoms mean the routine is too difficult.
• Always prioritize safety during balance training and stop immediately if you experience neurological “red flags.”

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Disclaimer: This blog post is for educational and informational purposes only. It does not constitute medical advice, diagnosis, or treatment. Always consult with a qualified healthcare professional, such as a physical therapist or vestibular specialist, before beginning or modifying any exercise program for a concussion or vestibular disorder.