Dr. Friedman is it common to have both Hashimoto and Graves disease? Can hypothyroidism be due to a pituitary problem?
Diagnosis of Hyperthyroidism and Determination of the Type of Hyperthyroidism
There are many causes of hyperthyroidism and proper treatment requires both a diagnosis(usually done with history and laboratory tests) and a determination of the type of hyperthyroidism (usually done with history, thyroid examination and nuclear medicine tests). To diagnose hyperthyroidism, Dr. Friedman will measure TSH, free T4 and free T3. A suppressed TSH with an elevated free T4 and free T3 indicates frank hyperthyroidism, while a suppressed TSH with an upper-normal free T4 and free T3 indicates subclinical hyperthyroidism. A suppressed TSH with a low or low-normal free T4 and free T3 indicates hypothyroidism due to a pituitary problem. An elevated TSH indicates hypothyroidism due to a thyroid problem.
Once Dr. Friedman determines that a patient has hyperthyroidism, he then determines which type of hyperthyroidism the patient has.
We value and respect our HERWriters' experiences, but everyone is different. Many of our writers are speaking from personal experience, and what's worked for them may not work for you. Their articles are not a substitute for medical advice, although we hope you can gain knowledge from their insight.