Most of my work involves public speaking. Recently a situation has developed where my left ear blocks up when
projecting my voice to an audience
< this only happens when I am speaking to an audience
< the problem can begin after an hour of public speaking;
sometimes it can kick in a little later; occasionally it doesn’t happen at all
< when it starts, it keeps coming back during public speaking time
< when I stop speaking loudly it goes away
< it’s not painful, just annoying as it muffles the sound of my voice
< only very occasionally I’ve had this problem in the past but now it’s more frequent. I am 63 years old
< I’ve had my ears rinsed by a doctor removing wax blockages but it hasn’t resolved the problem
< I’m trying to figure out what triggers it: swallowing, for example, I drink about half a litre of water (sometimes more) over a four hour public speaking session
< has it something to do with the way I use my voice?
Many thanks.