Question About Single Frequency Hearing Loss

I was shocked to discover my hearing to be much more damaged than the hearing tests show. ENT just overlooked it, relying on their shitty test.

My left ear is not able to hear a loud pure tone between 10khz and 10.8khz. The threshold I can just guess: 50db. Below and above my hearing is fine.

What I don't understand is that this hearing loss is so small in frequency (not even 1khz) and so profound.

Has anybody a similar pattern?

What can be the origin? I supposed SSHL, but I'm sceptical because aren't those broader (at least 3 khz)?
I didn't find any similar audiograms.

I've had no noticable sound distortion and no hyperacusis.

Any ideas are appreciated.

 

I have similar hearing loss at 6kHz. Coincidentally, my tinnitus is at 6kHz. I blame mine on earphones.

 

I don't understand why the dip is so narrow then. To have a noise induced hearing loss would make the dip around 3khz-4khz, which I have as well and which is neither as narrow nor as deep as what I've found on 10500hz.