‣
‣

	Unilateral → Need imaging	Bilateral
Pulsatile
(Vascular)	Cerebrovascular disease
‣	Systemic condition: ‣, ‣,
‣
Non-pulsatile
(Neuro)	‣ affecting 1 side: tumor, Ménière	‣ affecting both sides: Presbycusis, noise-induced hearing loss