Hacker News new | past | comments | ask | show | jobs | submit login

There are some conditions, like cranial nerve VII (facial nerve) palsy, where hyperacousis is a symptom. You have a couple muscles in your ear that attenuate sound, so it's not out of the realm of possibility that something happened to your father and his hearing improved.

Applications are open for YC Winter 2020

Guidelines | FAQ | Support | API | Security | Lists | Bookmarklet | Legal | Apply to YC | Contact