[pims]

If by bursts of tinnitus you mean a high pitched noise for a few seconds (sometimes longer), these are rather normal and very common, not much to worry about I believe.

Is the sensitivity you describe specific to certain sounds? If so, that could be some kind of hyperacusis as it can be very focused on certain frequencies. Mine is mild/moderate so I can tolerate a loud discussion for a while, but stuff like broken glass is simply unbearable, it feels like the glass is breaking inside my ears and usually makes them painful for a couple of hours.