A woman, only identified in the media by her surname Chen, woke up one day and discovered she could only hear half of the world's population.
The woman, from China, realised her condition after she woke up not being able to hear a word her boyfriend said.
She rushed to the hospital, where an ear, nose, and throat specialist diagnosed her with “reverse-slope hearing loss”—meaning that she can’t hear low-frequency sounds.
"She was able to hear me when I spoke to her, but when a young male patient walked in, she couldn't hear him at all," a female doctor, Lin Xiaoqing, told the Daily Mail.
According to the Thigpen Hearing Center, reverse-slope hearing loss is extremely rare. High-frequency hearing loss, which would make it more difficult to hear women and children, is far more common. The cause of Chen’s condition isn’t clear, but Xiaoqing theorized that fatigue and stress are at least partially to blame.
It does look like the woman will eventually make a full recovery.