Realigning the crystals in your ear involves a series of specific head movements that guide displaced calcium carbonate particles out of the semicircular canals and back to where they belong. These movements, called canalith repositioning maneuvers, resolve symptoms in over 90% of people within one or two sessions, and you can do them at home once you know which ear is affected.
Why the Crystals Cause Vertigo
Your inner ear contains tiny calcium carbonate crystals called otoconia. They normally sit in a structure called the utricle, where they act as small weights that help your brain detect head tilt and acceleration. Sometimes these crystals break loose and drift into one of the semicircular canals, the fluid-filled loops your brain uses to sense rotation. When loose crystals shift around inside these canals, they mimic fluid movement and send a false signal to your brain that you’re spinning when you’re actually still. That mismatch between what your eyes see and what your inner ear reports is what creates the sudden, intense vertigo.
This condition is called benign paroxysmal positional vertigo, or BPPV. The vertigo typically hits in short bursts triggered by specific head movements: rolling over in bed, looking up, or bending forward. Episodes usually last less than a minute but can be disorienting enough to cause nausea and balance problems.
Figuring Out Which Ear Is Affected
Before you try any repositioning maneuver, you need to identify which ear contains the displaced crystals. The standard test is the Dix-Hallpike maneuver. Sit on a bed with your legs extended, then turn your head 45 degrees to one side. Have someone guide you as you lie back quickly so your head hangs slightly off the edge, with one ear pointing toward the floor. Keep your eyes open throughout.
If you experience vertigo and your eyes start making involuntary flickering movements (called nystagmus), the affected ear is the one pointing toward the floor. If nothing happens, sit back up, wait a minute, and repeat the test with your head turned to the other side. This step matters because the repositioning maneuvers are performed differently depending on which ear is involved.
The Epley Maneuver: Step by Step
The Epley maneuver is the most widely used technique for realigning ear crystals. It works by using gravity to move the loose particles through the semicircular canal and deposit them back into the utricle. These instructions are for the right ear. If your left ear is affected, mirror every direction.
- Position 1: Sit upright on your bed with a pillow placed behind you so it will rest under your shoulders (not your head) when you lie back. Turn your head 45 degrees to the right. Hold for 30 seconds.
- Position 2: Lie back quickly, keeping your head turned. Your shoulders should land on the pillow, and your head should recline slightly past the edge, tilted back. Stay here for 30 seconds, or until any dizziness stops.
- Position 3: Without lifting your head, turn it 90 degrees to the left so your left ear now faces the floor. Hold for 30 seconds.
- Position 4: Roll your entire body onto your left side while turning your head another 90 degrees so you’re looking down at the floor. Hold for 30 seconds.
- Position 5: Sit up slowly on your left side.
Each position should be held long enough for any dizziness to fully subside before moving to the next. You may feel a brief wave of vertigo during the maneuver as the crystals move through the canal. That’s expected and actually a sign the particles are shifting.
You can repeat the Epley maneuver up to three times a day until your symptoms have been gone for a full 24 hours. After one or two treatment sessions, about 91% of people experience complete symptom resolution.
The Half Somersault: An Easier Alternative
If you have neck problems or find the Epley uncomfortable, the half somersault maneuver (also called the Foster maneuver) is a good alternative. It doesn’t require you to hang your head off the edge of a bed, which makes it gentler on the cervical spine. These instructions are for the right ear.
- Step 1: Kneel on the floor and tilt your head back to look at the ceiling briefly.
- Step 2: Tuck your chin and place the top of your head on the floor, as if you were about to do a somersault.
- Step 3: Turn your head to face your right elbow (toward the affected ear). Hold for 30 seconds or until dizziness fades.
- Step 4: Keeping your head turned toward the right, raise it quickly to back level (so your head and back form a straight line while you’re still on your knees). Hold for 30 seconds.
- Step 5: Raise your head fully upright while keeping it turned slightly toward the right shoulder. Then slowly turn to face forward and sit back.
Wait 15 minutes between repetitions of this maneuver. Some people find it causes less nausea than the Epley because the head stays closer to the body throughout.
What to Do After the Maneuver
For the rest of the day following a successful repositioning, avoid bending over. For several days after treatment, don’t sleep on the side that was triggering your symptoms. These precautions help prevent the crystals from slipping back into the canal before they’ve had a chance to settle.
Some people feel mildly off-balance or slightly “floaty” for a day or two after repositioning, even when the vertigo itself is gone. This is normal and typically resolves on its own as your brain recalibrates.
When Home Maneuvers Aren’t Safe
The Epley maneuver requires passive neck extension and rotation, which can be harmful for people with certain spinal conditions. If you have cervical spondylosis, a history of cervical spine fracture, disc problems in your neck, or rheumatoid arthritis affecting the cervical spine, the neck manipulation involved could risk serious injury. The half somersault maneuver places less strain on the neck but still involves head positioning that may not be appropriate for everyone with spinal issues.
If you have neck or spine conditions, or if your symptoms don’t improve after several days of home maneuvers, a vestibular therapist or ENT specialist can perform the repositioning in a controlled setting where they can monitor your response and adjust the technique. Some clinics also have specialized chairs that rotate your entire body, eliminating the need for neck manipulation altogether.
Why Crystals Come Loose in the First Place
In many cases, there’s no clear cause. BPPV becomes more common with age as the crystals naturally degrade and detach more easily. Head injuries, even minor ones, can jar crystals loose. Prolonged bed rest, inner ear infections, and certain surgeries that involve lying in one position for extended periods are also common triggers. Some people experience recurrent episodes over months or years, and performing the maneuver promptly each time keeps vertigo from lingering.