Benign Paroxysmal Positional Vertigo (BPPV)

Overview

Benign paroxysmal positional vertigo, or BPPV, is one of the most common causes of vertigo, the false sensation that you or the room is spinning. It happens when tiny calcium crystals that normally sit in one part of the inner ear become dislodged and drift into the fluid-filled balance canals. When you move your head in certain ways, these loose crystals shift and send confusing signals to the brain about movement and position, triggering a sudden burst of spinning.

The name describes the condition well: it is benign (not dangerous and not a sign of a serious brain problem), paroxysmal (it comes in sudden, short bursts), positional (set off by head position), and causes vertigo. Episodes are brief, usually lasting less than a minute, but can be intense and may be accompanied by nausea. BPPV is very treatable, often with simple head-repositioning maneuvers performed in the clinic, and it frequently resolves on its own over time.

Symptoms

The main symptom is brief, intense spinning vertigo brought on by specific head movements. Between episodes, people usually feel normal or only slightly off balance.

• Sudden spinning sensation triggered by movements such as rolling over in bed, lying down, sitting up, tipping the head back, or bending over
• Episodes that typically last seconds to under a minute
• Nausea and sometimes vomiting
• A feeling of unsteadiness or being off balance between attacks
• Brief involuntary eye movements (nystagmus) during an episode

BPPV does not cause hearing loss, ringing in the ears, fainting, weakness, slurred speech, or numbness. If vertigo comes with any of those symptoms, or with severe headache or trouble walking, seek urgent medical care, as these can point to a different and potentially serious cause.

Causes

BPPV is caused by displaced inner ear crystals, but the reason they become dislodged is not always clear.

• Loose ear crystals: Small calcium particles (otoconia) move out of place into the balance canals, where they disrupt normal balance signals.
• Aging: The most common situation, as the crystals are more likely to come loose with age.
• Head injury: A blow to the head can dislodge the crystals.
• Inner ear disorders: Other ear conditions or prolonged bed rest can contribute.

In many cases no specific cause is identified, and the condition is simply attributed to natural changes in the inner ear.

Risk Factors

• Older age
• Previous head injury
• Prior episodes of BPPV, which can recur
• Other inner ear disorders
• Prolonged bed rest or being inactive
• Female sex, which is associated with slightly higher rates

Diagnosis

BPPV is usually diagnosed from the typical history and a simple bedside test, without the need for scans.

• History: Brief spinning triggered by head position changes strongly suggests BPPV.
• Dix-Hallpike maneuver: The doctor guides your head and body into specific positions while watching for the characteristic brief vertigo and eye movements.
• Supine roll test: Used to check a different balance canal.
• Imaging: Brain scans are not usually needed but may be done if the pattern is unusual or other neurological symptoms are present.

Treatment

BPPV responds well to treatment, and many cases improve quickly. The mainstay is a series of head movements that guide the loose crystals back to where they belong.

• Canalith repositioning maneuvers: The Epley maneuver and similar techniques move the displaced crystals out of the balance canal; they are often very effective and can be done in the clinic and sometimes taught for home use.
• Home exercises: Brandt-Daroff exercises may be recommended to help the brain adjust and reduce symptoms.
• Medication: Anti-nausea or anti-dizziness medicines may be used briefly for severe nausea but do not fix the underlying problem and are not a long-term solution.
• Watchful waiting: BPPV often resolves on its own over weeks as the body reabsorbs the crystals.

BPPV can come back, but repositioning maneuvers can usually be repeated if it does.

Prevention

• Move slowly and deliberately when changing head position if you are prone to episodes
• Avoid sudden tilting of the head back when symptoms are active
• Learn and use prescribed home exercises or maneuvers if BPPV recurs
• Protect your head from injury during sports and daily activities
• Tell your doctor if episodes return, as a repeat maneuver often helps

When to See a Doctor

See a doctor if you have repeated episodes of position-triggered spinning, especially if they interfere with daily activities or increase your risk of falling. Seek urgent medical care if vertigo or dizziness comes with any of the following, which can suggest a more serious problem:

• Severe or sudden headache
• Double vision, slurred speech, or trouble swallowing
• Weakness or numbness in the face, arm, or leg
• Difficulty walking, fainting, or loss of consciousness
• New hearing loss or ringing in the ears

Related Topics

Frequently Asked Questions

References

1. American Academy of Otolaryngology–Head and Neck Surgery. Benign Paroxysmal Positional Vertigo.
2. Mayo Clinic. Benign paroxysmal positional vertigo (BPPV) — Symptoms and causes.
3. National Institute on Deafness and Other Communication Disorders (NIDCD). Balance Disorders.
4. MedlinePlus, U.S. National Library of Medicine. Benign positional vertigo.