Yup, I have this crawling feeling too. That's 100% physical.
Very big plot twist happened today and keep in mind, I am 13 months into this nightmare.
I put my background noise last night at very low volume for sleeping, which usually results in a more persistent drone during the day.
On this day though, I took a seat in an office chair (in my home) that I hadn't been sitting on for the longest time.
I was sitting there, working on my laptop, drone was buzzing at 6/10 volume. But then... I decided to take a break and put on a YouTube video which made me slouch a bit in my chair and
bring my chin closer to my chest.
What happened next had me almost in tears (note: first time I have been able to do this since onset), when I brought my chin to my chest, the drone was gone. Gone!
I was so thrown off that I even yelled at my girlfriend to come join me. I brought my neck back up and whaddayaknow, the drone came back to 6/10 level. I brought my chin down to my chest again, drone was gone again.
Now I'm even more sure than before that this is muscle/tension related.
What other tinnitus turns itself off completely some days. What other tinnitus is 8/10 ON after a short car ride and then starts to clearly, audibly
stutter before stopping.
Now, that said, I still believe my acoustic trauma started all this, as is being mentioned by
this paper on muscle/tension related tinnitus:
"
Diagnosis and management of somatosensory tinnitus: review article"
It states that while acoustic trauma can be the trigger for these issues (muscle tension in/around the ear), but the thing that keeps it alive / buzzing is that muscle tension.
Now the million dollar question: how to fix this.