What Is Vertigo?
Vertigo is the sensation that you or your surroundings are spinning or moving when there's actually no movement at all. It's more than just feeling dizzy—it's a specific type of dizziness that can make you feel like you're on a merry-go-round even when you're standing completely still. Many people also experience nausea, vomiting, sweating, and difficulty with balance when vertigo strikes.
What Causes Vertigo?
Vertigo can stem from many different causes, ranging from harmless inner ear problems to more serious conditions requiring immediate medical attention. Understanding the cause is the key to getting the right treatment.
Common Causes (Peripheral Vertigo — Inner Ear Problems)
Benign Paroxysmal Positional Vertigo (BPPV): This is the most common cause of vertigo, especially in people over 50. It happens when tiny calcium crystals (called canaliths) get stuck in the wrong part of your inner ear. When you move your head in certain ways—like rolling over in bed or looking up—these crystals shift and trigger brief episodes of intense spinning that usually last less than a minute.
Vestibular Neuritis and Labyrinthitis: These conditions occur when a viral infection inflames the inner ear or the nerve that connects your inner ear to your brain. This causes sudden, severe vertigo that can last for hours or even days, along with nausea and balance problems. Labyrinthitis also affects hearing, while vestibular neuritis does not.
Ménière's Disease: This condition involves a buildup of fluid in the inner ear, causing episodes of vertigo that typically last 20 minutes to several hours. People with Ménière's disease also experience fluctuating hearing loss, ringing in the ears (tinnitus), and a feeling of fullness in the affected ear.
Vestibular Migraine: Some people with migraines experience vertigo as part of their migraine attacks. The vertigo can last anywhere from minutes to days and may occur with or without a headache. Research shows that patients with vestibular migraine develop abnormal responsiveness to both vestibular and visual stimuli, characterized by heightened self-motion sensitivity and visually-induced dizziness.
Medication-Induced Vertigo: Many medications can cause dizziness or vertigo as a side effect. Common culprits include certain antibiotics (especially aminoglycosides), blood pressure medications, antidepressants, anti-anxiety medications, and even some over-the-counter antihistamines and pain relievers.
Orthostatic Hypotension: This is a sudden drop in blood pressure when you stand up from sitting or lying down, causing lightheadedness or a spinning sensation. It's particularly common in older adults and people taking blood pressure medications.
Vision-Related Causes of Vertigo and Dizziness: The Overlooked Connection
As an eye doctor, this is the section I'm most passionate about—because these causes are frequently missed, yet they are among the most treatable.
| Vision Problem | How It Causes Vertigo | Key Facts |
|---|---|---|
| Anisometropia (Unequal Rx Between Eyes) | Different image sizes on each retina confuse the brain's spatial processing, disrupting balance and depth perception | Found in 41% of children with vertigo who had ophthalmologic disorders; 2/3 resolved with glasses alone [1] |
| Uncorrected Refractive Error | Weakens the vestibulo-ocular reflex (VOR)—the system that stabilizes images during head movement—leading to balance dysfunction | National study showed uncorrected Rx linked to worse vestibular balance [3] |
| Vergence Insufficiency | Eyes can't converge properly on near objects, creating visual conflict that triggers dizziness | Found in 70% of children with vertigo and normal vestibular exams [1] |
| Strabismus (Eye Misalignment) | Misaligned eyes send conflicting signals to the brain, disrupting spatial orientation | Often co-exists with vergence insufficiency; treatable with prisms, therapy, or surgery |
| Visual Vertigo Syndrome | Over-reliance on vision for balance (visual dependence) makes patients dizzy in busy visual environments | Triggered by supermarkets, crowds, traffic, scrolling screens [4][5] |
| New or Incorrect Eyeglasses | Errors in lens centration, pantoscopic tilt, vertex distance, or bifocal segment position create visual distortion | Usually temporary; if persistent, have the glasses rechecked [2] |
Why Does a Prescription Difference Between the Eyes Cause Vertigo?
Here's what happens: when there's a significant difference in prescription (refractive power) between your two eyes, each eye projects a slightly different-sized image onto the brain. Your brain tries to fuse these unequal images into one, but the mismatch creates a sensory conflict. This conflict disrupts your spatial orientation system—the same system that relies on matching visual, vestibular (inner ear), and proprioceptive (body position) signals to keep you balanced. The result? Dizziness, lightheadedness, and sometimes full-blown vertigo.
According to the American Academy of Ophthalmology's Preferred Practice Pattern, most adults can tolerate up to 3.00 diopters of difference in eyeglass refractive correction between the two eyes, though occasionally individuals may tolerate more. [2] However, many patients—especially those who are older, who have had recent prescription changes, or who have other vestibular sensitivities—can become symptomatic with differences as small as 1.00 to 1.50 diopters.
The vestibulo-ocular reflex (VOR) is the system that senses head movements and generates equal and opposite eye movements to keep images stable on the retina. Visual inputs are critical to maintaining the accuracy of this reflex. A reduction in visual input—from uncorrected refractive error, anisometropia, or poorly made glasses—can weaken this feedback loop and lead to balance dysfunction. [3]
The Bottom Line on Vision and Vertigo
Serious Causes That Require Immediate Medical Attention (Central Vertigo)
Stroke or Transient Ischemic Attack (TIA): When blood flow to the part of the brain that controls balance is interrupted, it can cause sudden vertigo along with other symptoms like difficulty speaking, weakness on one side of the body, vision problems, or severe headache. This is a medical emergency.
Brain Tumor or Mass: Though rare, tumors or other masses in the brain can cause vertigo, especially if they affect the cerebellum or brainstem.
Multiple Sclerosis: This autoimmune disease can affect the nerves involved in balance and cause episodes of vertigo.
Medications That Can CAUSE Vertigo: What to Watch Out For
Before you add another pill to treat your dizziness, check whether one of your current medications might be causing it in the first place. Here's a comprehensive chart:
| Medication Class | Common Examples | Why It Causes Vertigo / Dizziness |
|---|---|---|
| Aminoglycoside Antibiotics | Gentamicin, tobramycin, streptomycin, amikacin | Ototoxicity: Directly damages hair cells in the inner ear, causing permanent vestibular loss. Risk increases with higher doses and longer use. Gentamicin is one of the most vestibulotoxic drugs known. |
| Blood Pressure Medications | ACE inhibitors (lisinopril), beta-blockers (metoprolol), calcium channel blockers (amlodipine), diuretics (furosemide) | Orthostatic hypotension: Lowers blood pressure too aggressively, especially when standing. Reduced blood flow to the brain and inner ear triggers dizziness and lightheadedness. |
| Loop Diuretics | Furosemide (Lasix), bumetanide, ethacrynic acid | Ototoxicity + dehydration: Can directly damage inner ear structures; also causes volume depletion and electrolyte imbalances that contribute to dizziness. |
| Antidepressants (SSRIs/SNRIs) | Sertraline, fluoxetine, venlafaxine, duloxetine | Serotonin effects: Serotonin receptors exist in the vestibular system. SSRIs can cause dizziness during initiation, dose changes, and especially during withdrawal ("brain zaps"). |
| Benzodiazepines | Diazepam (Valium), lorazepam (Ativan), alprazolam (Xanax), clonazepam | CNS depression: Suppresses the central vestibular system. Ironically used short-term for vertigo, but long-term use prevents brain compensation and worsens chronic dizziness. |
| Anti-Seizure Medications | Carbamazepine, phenytoin, gabapentin, pregabalin, topiramate | Cerebellar suppression: These drugs affect the cerebellum and brainstem—key balance centers—causing dose-dependent dizziness and imbalance. |
| Muscle Relaxants | Cyclobenzaprine, tizanidine, baclofen, methocarbamol | CNS sedation: Suppress central processing of balance signals, causing drowsiness, dizziness, and impaired coordination. |
| Opioid Pain Medications | Hydrocodone, oxycodone, tramadol, morphine | Vestibular suppression + orthostatic effects: Depress the central nervous system and lower blood pressure, causing dizziness from multiple mechanisms. |
| OTC Antihistamines (Sedating) | Diphenhydramine (Benadryl), chlorpheniramine, hydroxyzine | Vestibular suppression: Block histamine receptors in the vestibular nuclei. While meclizine is used for vertigo, other antihistamines can worsen baseline dizziness, especially in elderly patients. |
| Phosphodiesterase-5 Inhibitors | Sildenafil (Viagra), tadalafil (Cialis) | Vasodilation: Sudden blood pressure drops and altered blood flow can cause lightheadedness and dizziness. |
| Chemotherapy Agents | Cisplatin, carboplatin, vincristine | Ototoxicity: Cisplatin in particular is highly toxic to inner ear hair cells, causing both hearing loss and vestibular damage that may be permanent. |
| NSAIDs (High Dose) | Aspirin (high dose), ibuprofen, naproxen | Salicylate toxicity: High-dose aspirin can cause tinnitus and dizziness. Other NSAIDs can occasionally affect vestibular function or cause fluid retention affecting inner ear pressure. |
Natural & Home Remedies for Vertigo and Dizziness
Here's my comprehensive chart of evidence-based natural approaches, organized from vision-related fixes (start here!) through general health strategies:
| Remedy | How It Helps | Practical Details |
|---|---|---|
| 👁️ STEP 1: FIX VISION ISSUES FIRST | ||
| Get a Current, Accurate Eye Exam | Identifies anisometropia, uncorrected refractive error, vergence insufficiency, and strabismus—all proven causes of vertigo | See an ophthalmologist or optometrist; bring your current glasses. Ask specifically about prescription difference between eyes. 2/3 of patients resolve vertigo with correct Rx alone [1] |
| Correct Anisometropia | Equalizes image sizes on both retinas, ending the sensory conflict that triggers dizziness | New glasses with accurate Rx; contact lenses may be better for large differences (they produce less image size difference than glasses) |
| Prism Correction | Compensates for eye misalignment (strabismus) and vergence problems, reducing visual conflict | Prescribed by your eye doctor; added to eyeglass lenses. Can provide immediate relief for some patients |
| Vision Therapy | Strengthens eye coordination (vergence) and reduces visual dependency | Supervised exercises, typically 12–24 weeks; especially effective for vergence insufficiency |
| Have Glasses Rechecked | Catches errors in lens centration, pantoscopic tilt, vertex distance, or bifocal segment position | If dizziness started with new glasses, return to the dispensing optician within 1–2 weeks |
| Reduce Screen Time / Take Visual Breaks | Reduces visual fatigue and over-stimulation that worsen visual vertigo | 20-20-20 rule: every 20 minutes, look 20 feet away for 20 seconds. Reduce scrolling in visually busy feeds |
| 👂 STEP 2: ADDRESS INNER EAR & VESTIBULAR ISSUES | ||
| Epley Maneuver (for BPPV) | Repositions displaced calcium crystals (canaliths) back to their correct location in the inner ear | Nearly 100% success rate when performed correctly. Takes ~5 minutes. Your doctor or PT can teach you to do it at home. Involves 4 head/body positions held 30 sec each |
| Vestibular Rehabilitation Therapy (VRT) | Retrains the brain to compensate for inner ear imbalances; improves gaze stability and balance | Performed by specialized physical therapist. Includes gaze stabilization exercises, balance training, and habituation exercises. For visual vertigo, includes optokinetic stimuli [4][5] |
| Brandt-Daroff Exercises | Habituates the brain to the movements that trigger BPPV symptoms | Done at home: sit on bed edge, lie to one side for 30 sec, sit up, lie to other side. Repeat 5× each side, 3× daily for 2 weeks |
| 🌱 STEP 3: EVIDENCE-BASED SUPPLEMENTS & HERBS | ||
| Ginger | Blocks nausea receptors and affects the vestibular system through a different pathway than standard anti-nausea drugs (acts on the stomach, not the CNS) | 0.5–3 grams/day in capsule form. Can also use fresh ginger tea. Generally safe; may thin blood slightly at high doses |
| Ginkgo Biloba | May improve blood flow to the brain and inner ear; some evidence for reducing dizziness in older adults | 80 mg twice daily. ⚠️ Interacts with blood thinners (warfarin, aspirin)—check with your doctor before starting. Evidence is mixed |
| Vitamin D | Deficiency is linked to BPPV recurrence; the inner ear's calcium metabolism depends on adequate vitamin D | Check your blood level (25-OH vitamin D). Aim for 30–50 ng/mL. Supplement 1,000–2,000 IU/day if low. Helps reduce BPPV recurrence |
| Vitamin B12 | Deficiency can cause dizziness, balance problems, and peripheral neuropathy | More common in older adults, vegans, and people on metformin or PPIs. Check blood level; supplement if low |
| Magnesium | Plays a role in vestibular migraine prevention; deficiency contributes to muscle tension and vascular spasm | 400 mg/day magnesium glycinate or oxide. Especially helpful if vertigo is migraine-related |
| 🏃 STEP 4: LIFESTYLE & GENERAL HEALTH | ||
| Stay Well Hydrated | Dehydration reduces blood volume and blood pressure, directly causing lightheadedness; also affects inner ear fluid balance | Aim for 8+ glasses of water daily. More if you exercise, take diuretics, or live in hot climates. Drink before you feel thirsty |
| Reduce Salt Intake | Especially important for Ménière's disease—excess sodium increases fluid retention in the inner ear | Aim for <2,000 mg sodium/day if you have Ménière's. Read food labels carefully; processed foods are the main source |
| Limit Caffeine & Alcohol | Both can affect inner ear fluid balance, blood pressure regulation, and vestibular function | Caffeine is a diuretic and stimulant; alcohol is directly vestibulotoxic and dehydrating. Reduce gradually to avoid withdrawal headaches |
| Get Up Slowly | Prevents orthostatic hypotension—the blood pressure drop that causes lightheadedness on standing | Sit on the edge of the bed for 30 seconds before standing. Flex your calves before rising. Stay near support until steady |
| Prioritize Sleep | Sleep deprivation impairs central vestibular compensation and lowers the threshold for vertigo episodes | 7–9 hours nightly. Keep a consistent sleep schedule. Avoid screens 1 hour before bed (reduces visual overstimulation too) |
| Manage Stress | Stress and anxiety heighten vestibular sensitivity and are strongly linked to vestibular migraine triggers | Deep breathing, meditation, prayer, gentle yoga, or walking. Even 10 minutes daily can reduce dizziness frequency |
| Regular Exercise | Improves cardiovascular fitness, blood pressure regulation, and central vestibular compensation | 30 minutes of moderate activity most days. Walking, swimming, and tai chi are excellent for balance. Start slowly if currently dizzy |
| Avoid Sudden Head Movements | Reduces triggering of displaced canaliths (BPPV) and minimizes vestibular provocation | Turn your whole body instead of just your head. Be careful looking up (use a step stool instead of tilting head back). Move deliberately |
Medical Treatments for Vertigo
Medications for Acute Vertigo Episodes
Antihistamines (meclizine, dimenhydrinate, diphenhydramine): These can provide relief within 2 hours for acute vertigo symptoms by suppressing the vestibular system and reducing nausea.
Anti-nausea medications (promethazine, metoclopramide): These help control the nausea and vomiting that often accompany vertigo.
Benzodiazepines (diazepam, lorazepam): May be used for severe acute vertigo but are generally not recommended for long-term use—they interfere with your brain's ability to compensate for balance problems and can worsen symptoms over time.
For Specific Conditions
Ménière's Disease: Diuretics (water pills) and betahistine may help reduce fluid buildup. For severe cases, intratympanic injections or surgery may be considered.
Vestibular Migraine: Migraine prevention medications like beta-blockers, calcium channel blockers, or certain antidepressants may be prescribed.
Vision-Related Vertigo: Properly prescribed corrective lenses, prism glasses, or vision therapy. This is often the most effective and least invasive treatment available.
What Tests Might You Need?
When Testing Is NOT Usually Needed
For most cases of vertigo, especially BPPV diagnosed with a positive Dix-Hallpike test, no blood work or imaging is necessary. The diagnosis is made based on your symptoms and a physical examination.
Blood Work
Blood tests are generally not routine for vertigo but may be ordered if your doctor suspects anemia, blood sugar problems, thyroid disorders, vitamin deficiencies (especially B12 and D), infection, or autoimmune conditions. Most patients with straightforward vertigo do not need blood work.
Vision and Eye Examination
A comprehensive eye examination should be considered for anyone with vertigo, especially if standard vestibular testing is normal, you have a new eyeglass prescription or recently changed glasses, symptoms are worse in visually busy environments, you have eye strain or headaches, or there's a known difference in prescription between your two eyes. Research suggests that every patient with vertigo and normal neurologic and vestibular exams should have a complete ophthalmologic examination before ordering more costly investigations like MRI. [1]
Imaging Studies
When imaging is NOT needed: Brief episodes of vertigo triggered by head movements with a positive Dix-Hallpike test (BPPV), or acute vertigo with a normal neurological exam and findings consistent with inner ear problems.
When MRI may be recommended: Vertigo with hearing loss or tinnitus (to rule out acoustic neuroma), vertigo with abnormal neurological signs, vertigo with severe imbalance or inability to walk, recurrent vertigo with brainstem symptoms, or high risk for stroke.
Important: Regular CT scans are NOT sensitive enough to detect many causes of vertigo, especially small strokes in the posterior fossa. MRI is the preferred imaging test when central causes are suspected.
🚨 Red Flags: When to Seek IMMEDIATE Medical Attention
Go to the emergency room or call 911 if you experience vertigo along with any of these warning signs:
- Sudden severe headache (worst headache of your life)
- Difficulty speaking or slurred speech
- Weakness or numbness on one side of your body
- Vision problems (double vision, loss of vision, or visual field defects)
- Difficulty walking or severe imbalance
- Confusion or altered mental status
- Chest pain or irregular heartbeat
- New hearing loss
- Vertigo after a head injury
- Vertigo lasting more than a few hours without improvement
These symptoms could indicate a stroke or other serious condition requiring immediate treatment. Time is critical.
The Bottom Line
Vertigo is a common problem with many possible causes. The good news is that most cases are due to benign inner ear problems that can be effectively treated with simple maneuvers and exercises. Natural remedies like ginger and vestibular rehabilitation can be tremendously helpful, while medications should generally be reserved for short-term symptom relief only.
The message I most want you to take away: Vision problems—including differences in prescription between the two eyes, uncorrected refractive errors, and eye coordination issues—can cause or contribute to vertigo and dizziness. These vision-related causes are often overlooked but are among the most treatable. A correct pair of glasses can be life-changing.
The key is getting the right diagnosis. If you're experiencing vertigo, see your healthcare provider for a proper evaluation—and make sure an eye examination is part of that workup. And remember: if you have any red flag symptoms, don't wait—seek emergency medical care immediately.
With the right diagnosis and treatment, most people with vertigo can find significant relief and get back to their normal activities.
References
- Anoh-Tanon MJ, Bremond-Gignac D, Wiener-Vacher SR. Vertigo Is an Underestimated Symptom of Ocular Disorders: Dizzy Children Do Not Always Need MRI. Pediatric Neurology. 2000;23(1):49-53. doi:10.1016/s0887-8994(00)00140-5.
- Jacobs DS, Afshari NA, Bishop RJ, et al. Refractive Errors Preferred Practice Pattern®. Ophthalmology. 2023;130(3):P1-P60. doi:10.1016/j.ophtha.2022.10.031.
- Willis JR, Vitale SE, Agrawal Y, Ramulu PY. Visual Impairment, Uncorrected Refractive Error, and Objectively Measured Balance in the United States. JAMA Ophthalmology. 2013;131(8):1049-56. doi:10.1001/jamaophthalmol.2013.316.
- Bronstein AM. Vision and Vertigo: Some Visual Aspects of Vestibular Disorders. Journal of Neurology. 2004;251(4):381-7. doi:10.1007/s00415-004-0410-7.
- Bronstein AM. Under-Rated Neuro-Otological Symptoms: Hoffman and Brookler 1978 Revisited. British Medical Bulletin. 2002;63:213-21. doi:10.1093/bmb/63.1.213.
Disclaimer: This blog post is for educational and informational purposes only and does not constitute medical advice. Always consult with your physician or qualified healthcare provider before starting any treatment, changing medications, or making health decisions. If you are experiencing a medical emergency, call 911 immediately.
Sandra Lora Cremers, MD, FACS
Board-Certified Ophthalmologist · Fellow, American College of Surgeons
Visionary Eye Doctors · Rockville, MD
Johns Hopkins Medicine at Suburban Hospital
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