I am sensitive to sound in general- leaf blowers are torture. Also have the "muffledness" and some dizziness. But my worst symptom is tinnitus. It all calmed down and I went to a concert (classical) that was immersive and had an uptick. Interesting: my CT scan also mentions dehiscence. These symptoms go up and down for me as well. I recently met with a really good doc and I discussed how I continue to expose myself to a certain level of sound so I don't become afraid. There are people with hyperacusis who hide in their house!