You roll over in bed and the room suddenly spins. It lasts less than a minute, then settles — until the next time you tip your head back to look at a shelf, or bend down to tie your shoes. If this sounds familiar, there's a good chance the cause has a name most people have never heard: BPPV.

What BPPV actually stands for

Benign Paroxysmal Positional Vertigo. Broken down, that's: benign (not dangerous), paroxysmal (sudden, brief episodes), positional (triggered by specific head movements), vertigo (a spinning sensation). It happens when tiny calcium crystals in the inner ear shift out of place and end up somewhere they shouldn't be, sending false signals about movement to the brain.

The tell-tale pattern

What makes BPPV recognisable is exactly what makes it different from other causes of dizziness — it's triggered by specific positions, not constant. Rolling over in bed, looking up at a high shelf, bending forward, or tilting the head back are classic triggers. Episodes are typically brief — seconds to under a minute — even though they can feel much longer in the moment.

How it's actually treated

Unlike a lot of conditions where treatment takes weeks to show results, BPPV often responds within a handful of sessions to canalith repositioning manoeuvres — specific, guided head and body movements (the Epley manoeuvre is the most well-known) designed to move the displaced crystals back to where they belong. This is combined with vestibular rehabilitation exercises for patients who need additional balance retraining afterwards.

Why it's worth getting assessed rather than waiting it out

Many people live with BPPV for months, avoiding certain head positions rather than getting it properly diagnosed and treated — understandably, since episodes are brief and it's easy to assume it'll just go away. But an assessment can usually identify it quickly, and treatment is often faster and more effective than most people expect for a condition that's been quietly limiting their daily movements.

Not every dizziness is BPPV

Persistent dizziness, dizziness with hearing changes, or vertigo accompanied by other neurological symptoms needs proper medical assessment rather than assuming it's BPPV — this article isn't a substitute for that assessment, just an explanation of one specific, common, and treatable cause.