What Is Vertigo?

You turn over in bed, or glance up at a high shelf, and for a few unsettling seconds the room doesn't just look unsteady — it seems to move. You haven't moved that fast, nothing around you is spinning, and yet your sense of balance insists that something is. That mismatch is the heart of vertigo, and the video at the top of this page walks through where it comes from, starting with a useful split: causes can be grouped as peripheral or central, depending on where the problem sits.

Is vertigo just another word for feeling dizzy?

Not quite, and the difference matters when you try to describe it. "Dizzy" is a broad word people use for light-headedness, feeling faint, or being generally unsteady. Vertigo is narrower: it's the feeling that you, or the world around you, is spinning or moving when neither is actually happening. You might also feel off balance or nauseated during an episode, but that false sense of movement is the defining part — it's what separates vertigo from simply feeling woozy after standing up too quickly.

Where does that spinning feeling actually come from?

Your balance system quietly combines signals from your eyes, your body, and your inner ear. The inner ear is especially important for detecting head movement — small structures there, including the semicircular canals, help your brain tell which way your head has turned. When those signals stop matching what your eyes are reporting, your brain reads the conflict as movement. As the video explains, peripheral vertigo comes from a problem within the inner ear itself, which can become inflamed because of illness. Central vertigo, by contrast, arises from a problem in the brain or spinal cord — the place where all those balance signals are brought together.

What is BPPV, the one involving tiny crystals?

One of the best-known peripheral causes has a long name: benign paroxysmal positional vertigo, usually shortened to BPPV. Small crystals that normally sit within the inner ear can become displaced, and when they drift where they shouldn't be, they irritate the small hair cells within the semicircular canals. The result is vertigo triggered by position — a change in head position sets off a brief episode, which fits that roll-over-in-bed moment many people describe. Where BPPV is the confirmed cause, a clinician may use a repositioning procedure such as the Epley maneuver; this site's "Epley Maneuver to Treat BPPV Vertigo" video demonstrates it over 1 minute 46 seconds for posterior canal BPPV affecting the right ear, with an animation in its second half showing what is happening inside the inner ear. It is a demonstration to learn from, not a set of instructions to copy on yourself — which ear and which canal are involved changes how it is done.

How does a clinician work out which kind it is?

Mostly by listening carefully, then examining with the pattern in mind. When episodes start, how long they last, what triggers them, and whether hearing changes or other symptoms come with them all point in different directions. An episode tied to head position tells a different story from a constant spinning feeling after an illness, and both differ from vertigo that arrives alongside weakness, speech change, or double vision. Those accompanying signs matter because central causes need a different response — our guide to what a stroke is and what happens in hospital explains why new neurological symptoms alongside dizziness should never be waited out at home.

So what happens next if it keeps happening?

That depends on the cause a clinician finds, which is exactly why getting the label right comes first. Some inner-ear causes settle or can be helped with repositioning, others need treatment aimed at the underlying problem, and central causes are investigated on their own pathway. What you can usefully do is notice and note the pattern — what you were doing when it started, how long it lasted, and what else you felt — because those details do real diagnostic work. And if vertigo comes with weakness, trouble speaking, vision changes, a severe headache, or an inability to walk steadily, treat that as urgent and seek care promptly rather than waiting for it to pass.

MedicalVideos.com has published trusted medical videos since 2007. The site was founded by Dr. Mohamed Ibrahim, MD, PhD — physician and researcher.

Frequently Asked Questions

Is vertigo a condition in itself?
Vertigo is a symptom rather than a final diagnosis. It describes the false feeling of spinning or movement, and different conditions — in the inner ear, or less commonly in the brain or spinal cord — can produce it.

What is the difference between peripheral and central vertigo?
Peripheral vertigo comes from a problem within the inner ear, the structure that helps detect head movement. Central vertigo arises from a problem in the brain or spinal cord, where balance signals are processed.

Why does changing position set off BPPV?
In benign paroxysmal positional vertigo, small crystals normally found within the inner ear become displaced and irritate the hair cells in the semicircular canals. Moving your head into certain positions can then trigger a brief spinning episode.

When should vertigo be checked urgently?
Seek prompt care if vertigo comes with weakness, speech or vision changes, a severe headache, or difficulty walking steadily. Those accompanying symptoms can point to a central cause that needs urgent assessment.

Educational only — this article is general information about vertigo, not medical advice and not a guide to anyone's diagnosis or treatment. What is causing your symptoms, and what should be done about them, belong with your own clinician. If vertigo comes with weakness, speech or vision changes, or other new neurological symptoms, seek urgent medical care.