If the room is truly spinning, and you feel nauseous, maybe even like vomiting ... then it's labyrinthitis -- inflammation of the inner ear. Often the profound dizziness is the only symptom; there isn't always pain or hearing loss (at first). The hallmark clue is if you're dizzy no matter what position you're in, and just rolling over in bed can start things whirling and spinning.

Get to the dr, who will rule out other problems first, like low blood pressure or hypoglycemia. Labyrinthitis usually is self-limiting, and certain antihistamines can be helpful to relieve symptoms. If there's an infection, you'll need antibiotics.

Don't try to drive or do any tasks requiring balance or co-ordination until these symptoms are gone.

Here's info from Medline .. Labyrinthitis.

Doreen