The medical terms themselves are enough to bring on a case of vertigo.

The four most common types of dizziness-related balance disorders are (hold on . . .): benign paroxysmal positional nystagmus (BPPN) or benign positional vertigo (BPV); perilymph fistula; Me'nie`re's disease, and endolymphatic hydrops.

Each of these hefty terms, ironically, refers to a disturbance of some of the tiniest organs in the body; the entire intricate network of passageways, sensors and nerves in the inner ear could fit inside a thimble.

BPPN or BPV involves damage to the inner ear, usually from a blow to the head or whiplash injury.

Perilymph fistula is a tear in one or both of the tiny membranes between the middle and inner ear, which allows fluid from the inner ear to leak.

Me'nie`re's disease, named for the French doctor who described it in 1861, is an inner ear disorder that causes vertigo, tinnitus or ringing in the ears, ear pressure and hearing loss.

Endolymphatic hydrops is a fluctuation of fluid in the inner ear -- from injury, infection or degeneration -- and causes symptoms including ear pressure, tinnitus, dizziness and nausea.

Nor are those the only polysyllables in the dizziness world -- where medical experts are known as neuro-otologists (specialists in the brain and balance system) or otolaryngologists (ear, nose and throat specialists).