Woman with medical condition can't hear "male voices"

A woman in China reportedly suffering from a rare medical condition supposedly can't hear male voices. Most hearing loss occurs at higher frequencies when the delicate hair-like stereocilia of the inner ear are damaged, but this woman has the much less common reverse-slope hearing loss (RSHL) that affects the ability to hear lower frequencies. From LiveScience:

At the hospital, Chen was treated by Dr. Lin Xiaoqing — a woman — who noted that while Chen was able to hear Xiaoqing's voice, she couldn't hear the voice of a nearby male patient "at all," according to Newsweek. Xiaoqing diagnosed Chen with reverse-slope hearing loss, a rare type of low-frequency hearing loss that likely impaired her ability to hear deep male voices....

Loss of hearing of lower-pitched sounds (which is what Chen experienced) is... less common because the bass-processing portion of the cochlea — a snail-shaped structure deep in the inner ear — is very well protected, said Jackie Clark, a clinical professor with the School of Behavioral and Brain Sciences at the University of Texas at Dallas, who also wasn't involved with Chen's case...

"Most studies have shown that if you catch it within 48 hours, you have the best chance for recovery," (Clark) said.

illustration: Morten Bisgaard - From the book "Tidens naturlære" 1903 by Poul la Cour