I know if I try to sing, I notice that after maybe 30 seconds, my voice-gets raspy and faint….at that point my throat in the aft lower right suddenly feels raw--- or like a little hot fleck of pepper is stuck down there. My eyes get watery for a second because of that sudden raw sting. I don't know when that started. Within the year?
I think ES can sort of cause things to displace inward. Maybe this squashes the throat area and alters how the vocal cords can move. (I'm guessing!) I think it could be why your voice can't do what it used to do?
I have not seen much here in terms of voice problems being talked about.