Sudden hearing loss, which physicians call sudden sensorineural hearing loss, or SSHL, is an unexplained, rapid loss of hearing — usually in one ear.

About half of the people who experience it will regain most or all of their hearing spontaneously, but the other half will not.

Elias Michaelides, MD, an ear, nose, and throat physician at Yale Medicine, wants to improve those odds through a clinical trial to test a new drug for this condition.