Her num. on thyroid were good but dr said some name .that has something to do with the brain and tyroid.shes so tired and feels so bad.what could it b?

The Dr. is probably : Referring to her TSH (thyroid stimulating hormone) it is the brains signal for the thryroid to make thyroid hormones. E=when the thyroid hormones are produced the TSH drops. We call it a feedback response. We use it as a measure of how well the thyroid is working and how well tretments work. However, many things can make you tired. See your doctor and start with a good physical exam.