thank you to everyone who has given me so much useful information over the last couple of days. As detailed in my previous message, I have managed to speak to a doctor, and I have been somewhat surprised at the result. She said that my mother’s thyroid is only very slightly under active, and is probably explained by age rather than anything else. She also said that her symptoms, e.g. terrible itching, flaking, exhaustion, sleeping most of the time etc, are in fact probably caused by her kidneys, which are at stage 4/5. So basically, I have been chasing my tail for very little point. I am desperately disappointed, because now I have to take away my mother’s ray of hope, and explain to her that her symptoms are not going to go away just by taking a pill.
But thank you again to all of you who tried to help.