Disequilibrium is the sensation of being off balance, and is most often characterized by frequent falls in a specific direction.
The scene where Holland and Pendlebury run down the Eiffel Tower steps and become increasingly dizzy and erratic, as does the camera work, presages James Stewart's condition in Alfred Hitchcock's Vertigo, made seven years later.
His nose bleeds so badly he becomes dizzy, and he worries that the same might happen in the tunnel, that he really might die there, trapped.
In a 2005 study assessing the effects of these painkillers on neuropathic pain, Lorazepam was chosen as an active placebo because it is not a painkiller but it does cause sleepiness and can cause dizziness.
In aviation and underwater diving, alternobaric vertigo is dizziness resulting from unequal pressures being exerted between the ears due to one Eustachian tube being less patent than the other.
In December 2000, Dutch journalist Marjon van Royen found that "because the chemical is sprayed in Colombia from planes on inhabited areas, there have been consistent health complaints in humans. Burning eyes, dizziness and respiratory problems being most frequently reported."
Rare but serious adverse events reported following ProQuad vaccination include allergic reactions, including swelling of the lips, tongue, or face; difficulty breathing or closing of the throat; hives; paleness; weakness; dizziness; a fast heart beat; deafness; long-term seizures, coma, or lowered consciousness; permanent brain damage; seizures (jerking or staring) caused by fever; or temporary low platelet count.