My doctor has ordered a TSH test for me and in reading up on it I DISCOVERED THAT THIS IS AN AUTOIMMUNE DISEASE, my children and grandchildren suffer from a variety of autoimmune diseases including severe plaque psoriasis, psoriatic arthritis, depression, hypothyroidism and alkalosing spondilitis. I suffer from none that I'm aware of but am wondering why he would order a TSH, any suggestions? Thanx Lynn