vertigo

Vertigo is Latin, from the verb vertere, meaning to turn. The noun vertīgō meant a whirling or spinning motion — it could describe a spinning top, a revolving door, or the rotational movement of the heavens. Cicero used it in the first century BCE to describe both physical and figurative turning. The word carried no inherent medical meaning. Anything that spun had vertigo.

Medieval Latin medical texts borrowed vertigo to describe the specific sensation of rotational dizziness. The shift was natural: what better word for a condition where the world appears to turn around you? By the twelfth century, medical writers were using vertigo to distinguish rotational dizziness from other forms of faintness or lightheadedness. The word entered English medical vocabulary by the early sixteenth century.

Alfred Hitchcock's 1958 film gave the word a second life outside medicine. In the film, vertigo is both a literal condition and a metaphor for psychological disorientation — the detective who cannot climb stairs is also a man who cannot see what is in front of him. The dolly zoom, the camera technique Hitchcock invented for the film, is still called 'the vertigo effect' by cinematographers. A Latin word for spinning became a film technique.

Modern neurology distinguishes vertigo from dizziness, lightheadedness, and disequilibrium. Vertigo is specifically the false perception of motion — usually rotation. The most common cause, benign paroxysmal positional vertigo, affects roughly 2.4% of adults at some point in their lives. The treatment involves moving the patient's head in a specific sequence to reposition displaced calcium crystals in the inner ear. The cure for the sensation of spinning is, appropriately, more turning.