Subhuman behaviours

How long for? Any sensations alongside the ringing?

Many, many years now, could just be permanently damaged hearing but idk. Sometimes gets stronger after a concert for example. I never really pay mind to it since my hearing is normal, but it's still there, sometimes louder than others. Or maybe that's just me paying mind to it and noticing it more than other times. No other noticeable sensations, ever.

Might be tinnitus user?

Probably, yeah, but there's nothing that can be done about it in any case. I guess I could go to a doctor and check it out.