Why everyday sounds can feel painfully loud

Ajouté : 2026-05-28

[00:00:00]If a coffee grinder or a slamming car door makes you flinch in actual pain, that's not sensitivity.

[00:00:05]That's a named condition called hyperacusis.

[00:00:08]Inside the auditory brain stem, neurons that translate sound pressure into loudness use a gain dial, and in hyperacusis the dial gets stuck at maximum.

[00:00:17]Researchers link the shift to damaged outer hair cells in the cochlea, which normally compress loud input before it ever reaches the brain.

[00:00:24]When that compression fails, sounds at 70 decibels can fire neurons the same way 100 decibels would in a typical ear, which the brain reads as threatened pain.

[00:00:33]It often shows up alongside tinnitus, and in studies up to 40% of people with chronic ringing also report this loudness recruitment pattern.

[00:00:41]Take the free hearing quiz, link in bio.