Tinnitus can originate from blood pressure changes in the ear

Evidence

Tinnitus, a ringing in the ears, is a common phenomenon that occurs in most people at some point in their lives, at least for a short while. Tinnitus is an auditory event that is not related to any external sound event. Tinnitus can present itself in various forms of perceived sound. A typical tinnitus sound is a steady pure-tone-like sound, but it can also be, for example, broadband or band-limited noise. The sound may also vary in time, for example, along with heartbeats, in which case the tinnitus is probably due to blood pressure changes in the ear. Another typical cause for tinnitus is excess noise exposure. — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 2674

Categorization

• QUESTION: Pulsatile tinnitus tracking heartbeats as a vascular, not cochlear, mechanism — worth chasing for a fuller account of tinnitus causes.