The term "a spell of deafness" can mean a period of temporary hearing loss.
A "spell of deafness" would mean casting a spell to make someone deaf.
The "spelling of deafness" is correct in the question (loss of hearing).
I'm pretty sure his deafness was not location-dependent. Did you spell all the words in your sentence correctly?
Yes, some deafness is heriditary while some deafness is not.
Post- Vocational Deafness:
what are the cause of partial deafness
Deafness is when somone is unable to hear anything.
Like allergies and birthmarks, deafness as a symptom by itself is not genetic. Deafness as a symptom of a disease which is genetic, is genetic.
Anacusis is the medical term meaning complete deafness.
deafness, trouble speaking, general confusion
His despair was deafness
Inborn Deafness is a trouble speaking or general fusion
temporary deafness
An example "He suffered from industrial deafness".