Photo credit: Blausen.com staff (2014), "Medical gallery of Blausen Medical 2014," licensed under CC BY 3.0 by Daniel Fink, MD, Chair, The Quiet Coalition Loud noise exposure, such as at a rock concert or after using a noisy appliance or power tool, causes temporary auditory symptoms such as muffling of sound. If hearing testing--audiometry--is performed,
Researchers have discovered why we temporarily hear muffled sound after a loud noise. While the muffled hearing will usually go away, the damage caused to hearing is permanent.
A new drug may prevent hearing loss after noise exposure, but how the drug researchers determined the drug's efficacy may be disturbing.