After a recent blow to the head (accidental) which caused mild concussion, my (pulsatile) tinnitus went into overdrive and although better, is still worse than normal. When I discussed the situation with my GP she was alarmed that I had never had investigations. I hadn't realised that this was a different form of tinnitus and has specific origins (including benign tumour in some cases - see tinnitusformula.com/library...
I've never been diagnosed with hypothyroidism (however, ME since late 80s), despite all the symptoms, and the blood tests to rule out hypothyroidism in relation to the tinnitus showed TSH to be within range. However, it does show a clear increase since it was last tested (currently 3.48 [0.27-4.20]; 2 Feb 2015: 2.53 [0.35-6.00]).
I'm now waiting the results on an MRI head scan to see what may be causing the tinnitus.
I'm wondering if anyone else has had a similar experience, bearing in mind that pulsatile tinnitus is generally associated with hyperthyroidism, rather than hypothyroidism.