[hexagonc]

I think maybe the same rule of thumb applies to tinnitus; if it starts suddenly without warning and persists then get it checked out. Otherwise, it may be normal. I've had mild tinnitus for years but it never occurs during the day unless I've been listening to very loud music and only rarely happens for a few seconds right before falling asleep. Fortunately, my symptoms also haven't gotten perceptibly worse for the last few years.