I went for MRI scan to look into my inner ear yesterday and after wards my hyperacusis was louder. I went home and could hear all the different banging, clanging and thudding sounds of the machine all night long in my bed. I knew beforehand there was a risk so I took my own ear plugs which were superior in noise ratings than the one I got offered from the NHS before I got into the machine. The nurse insisted I couldn't wear my own plugs as it was against the rules so I had no choice in the matter. Of course you get to wear head pads around your ears but they were useless too. The noise was deafening but I was only in the scanner for 15 minutes just enough time for the racket to be imprinted on my brain. To make matters worse my Tinnitus played up in line with my hyperacusis. What happens now is I'll hear the scanner sound for a few days before it reverts back to the usual humming and buzzing noise.
I had this happen after my hearing test and afterwards I could hear the sound of birds twittering outside my bedroom window at 1'o clock in the morning for around a week or so. I'm down for a CT scan next week, no problem with noise there.
I'd be interested to hear if some of you with Tinnitus and Hyperacusis had the same problems ?