Great questions and insights! I’ll respond to some below. And I’m posting my full test results.
I haven’t had a thorough check of my eustachian tubes. I want to say they work properly. My ears easily pop when changing altitude and I know what it feels like when they are occasionally congested when I have a cold.
I’ve never been told there is anything wrong with my hear canals. I’ve had my PCP, audiologist, and ENT look in them.
Without my hearing aids, my hearing in noise is bad and less bad in quiet. My hearing aids help hugely.
I have not had an ABR.
Yes, I really mean to ask what folks think caused my hearing loss.
I sometimes used headphones when I was young. I don’t remember using excessive volume, but looking that far back, I’m not so sure.