Otosclerosis is a medical condition that causes abnormal bone growth inside what sensory organ?
Correct answer: Ear

Player #24016910
RSVP78, I had this in both ears in my early 20's and had successful operations

flr
My mother had this in one ear, it was called coral ear in those days, 1930's.

GraceSpace
Rey, I'm going with Many reasons ... genetic? abnormal formation in uterus? karma????? 😉