I have this hissing noise in my head that never goes away and it's been particularly more loud the last couple of days. I've had this since a motorcycle accident I was in 11 years ago. Normally I can tune it out by concentrating on something intellectual, like website development. But its been harder to do at this louder volume. I'm now in bed reading Mastodon and I'm going crazy from it. I don't think its tinnitus because I don't hear it in my ears, I hear it inside my brain.