Just as a matter of interest, before i was diagnosed as being under-active, I noticed a red patch on my throat which was spreading over a matter of a few weeks. The skin seemed to be 'dying' as it went red and very dry (but not flaky) and worryingly began to spread quite noticeably. I went to the doctor who had no idea what it was but prescribed me a cortisone cream to try which did absolutely nothing. It was around this time that I went onto levothyroxine and the condition disappeared almost immediately and has never returned. Just wondered if this had happened to anyone else or if it was co-incidental that it disappeared at the time I started my treatment?