A friend of mine has been diagnosed with hyperthyroidism since last year. However, due to reasons even I don't know about, he has refused medication. Few days ago he began experiencing pain in his arms to an extent that he went to the doctor's for this. He didn't mention about his thyroid condition to this doctor, but the doctor claims that he lacks calcium and that he mustn't be in air-conditioned areas. Yesterday he began to have small red spots all over his body, more so on his back. So, my question is, can the aching bones and red spots have anything to do with his thyroid condition?