Peripheral causes of vestibular dysfunction
	• Benign positional vertigo: debris from the otoconia in the utricle float into the posterior canal, causing interference with cupula function, brought out by motion in the plane of the affected posterior canal.  This can be treated by the Epley maneuver, that rotates the head to float the debris away. • Acute viral labyrinthitis. • Alcohol – alcohol is lighter than blood, so the hair cells float in the endolymph. • Meniere’s disease – increased endolymphatic pressure. • Toxins – especially guanidino-sugar antibiotics like streptomycin and gentamycin.