I’ve had it since I was 27, over 40 years. I’ve learnt to live with it although some days are worse than others. Alcohol, sadly, exacerbates it as does air travel, head cold and sinus probs and loud noise such as at a concerts. Mine is a constant ‘electrical’ ringing/squealing and sometimes the boom boom of my pulse which is really annoying. I had a brain scan a few years back as they thought it might be a broken blood vessel. It wasn’t. I think after all this time I’m lumbered with it. I have the radio on all day which helps - avoidance tactic! Some days I don’t notice it at all unless I consciously do, like now when writing about it and it’s screaming at me ?.
I hope yours is temporary and if it isn’t, take heart you can learn to live along side it