Could a high TSH level mean a problem with the pituitary gland?
When our physician suspects we might have a problem with our thyroid he sends us to check the TSH level in our blood. If there is a lot of TSH in the blood it means that the thyroid can't work quickly enough to process all of the TSH meaning that we have a low level of thyroxine. Having a low TSH level means the thyroid produces too much thyroxine. Those are the usual physician's assumptions. But is it possible that the problem sometimes lies in the pituitary gland which produces TSH and not in the thyroid which receives it?