Acute Continuous Vertigo (ACV): Understanding the Spectrum of Causes

A term that you doctor may have said to you in passing that could confuse or concern you is Acute Continuous Vertigo (ACV), which vertigo that doesn’t just come and go, but can last days or weeks. It can be alarming, but there are many possible explanations.

A recent study helps shed light on what ACV is, why it happens, and the wide range of vestibular disorders that can cause it. We broke it down in a way that’s easy to understand, and so that you can see how this impacts vestibular disorders.

Acute Continuous Vertigo

Acute Continuous Vertigo (ACV) refers to a sudden onset of intense dizziness or spinning sensations that continues for a long stretch — often 24 hours a day for several days or even weeks.

It’s more than a brief dizzy spell. People with ACV may also experience:

• Severe imbalance (feeling like the ground is shifting or moving under your feet)
• Nausea and vomiting
• Trouble walking without support
• Sensitivity to movement or light

Because the symptoms are ongoing, ACV can feel frightening and overwhelming. Getting to the cause or diagnosis can be the key to treatment and recovery.

The Spectrum of Vestibular Disorders That Cause ACV

Researchers studying ACV found that it can be linked to many different vestibular conditions. Some start in the inner ear (peripheral causes), while others come from the brain or central nervous system (central causes).

Peripheral Causes (Inner Ear):

These make up the majority of ACV cases:

• Vestibular Neuritis: Inflammation of the vestibular nerve, causing sudden, severe vertigo without hearing loss.
• Sudden Hearing Loss with Vertigo: Sometimes vertigo appears alongside an abrupt drop in hearing.
• Ramsay Hunt Syndrome: A shingles outbreak near the ear that can damage hearing and balance.
• Labyrinthitis: An ear infection that affects both hearing and balance.
• Vestibular Schwannoma: A noncancerous tumor on the balance nerve.
• Otolithic Disorders (BPPV): Conditions affecting tiny crystals in the inner ear that help detect gravity and motion.

Central Causes (Brain & Nervous System):

Though less common, central causes are important to recognize:

• Stroke or Reduced Blood Flow in the back of the brain (posterior circulation)
• Migraine-Associated Continuous Vertigo
• Multiple Sclerosis
• Brain Lesions or Tumors such as epidermoid cysts
• Rare Infections like a cerebellar abscess

Why Identifying the Cause Matters

Though symptoms may present similarities, not all vertigo is the same. Some causes of ACV may resolve with vestibular rehab and time, while others require urgent medical care. That’s why getting a proper diagnosis is so important.

• Peripheral causes often respond well to vestibular rehabilitation therapy, helping the brain adapt and restore balance.
• Central causes, like strokes, need immediate medical treatment to prevent further complications. People with central disorders tend to also do less well with treatment like VRT, especially in the case of vestibular migraine.

With the right diagnosis and treatment, recovery is possible.

What To Do

If you or someone you love is experiencing sudden, ongoing vertigo:

• Don’t ignore it — lasting vertigo deserves medical attention.
• Seek a thorough evaluation, including balance and hearing tests.
• Ask about vestibular rehabilitation, which can be helpful for recovery.

At Vestibular Group Fit, we know how overwhelming ACV can feel. That’s why we focus on providing safe, supportive exercise and rehab strategies designed to help you rebuild balance, reduce dizziness, and get back to daily life with more confidence.

Ready to Take the Next Step Towards Healing?

If you’re looking for a supportive, expert-led space to help you regain confidence, reduce symptoms, and rebuild your life after a vestibular diagnosis, join us in Vestibular Group Fit.

This unique coaching program combines movement, education, nervous system retraining, and community — all designed specifically for people living with vestibular disorders. Whether you’re newly diagnosed or have been struggling for years, you are not alone and you can feel better.

👉Click here to join Vestibular Group Fit and starting your healing journey today.