Hi! I have been hypothyroid for many years now. Lately, I have been feeling flushed in the face and sometimes my legs, almost like a flu like symptom. I know I do not have a fever but I am also gaining weight and I am not eating any more than I did before. are there other people who suffer with this? I don't know if it is related to my condition or not but I do have some of the symptoms. I take 100 mcgs of Synthroid every a.m. if anyone is suffering with these symptoms, what can I do about them and how do I know if it is thyroid related or something else. I am glad to be part of this website! By the way, I live in the United States.