I was treated for 5 years with Carbimazole after having suffered various levels of hyperthyroidism for a few years. I eventually had RAI treatment after suffering break through symptoms whilst on Carbimazole. I was fine for 1 year but eventually became hypothyroidism and have been on varying levels of Levothyroxine since then (about 14 years). For the last two years I have had periods of fatigue and severe arthritic pain. I am showing low platelet levels when I have blood tests, but my GP just keeps repeating the tests and I am not offered another opinion or further tests. In fact the onlyrics time I have seen an Endocrinologist was when I had RAI. I am concerned that the length of time on Carbimazole could be causing my current problems. Has anyone else experienced this? Is it worth just seeing an Endocrinologist privately?