Pituitary hyperthyroidism and thyroid hyperthyroidism can be identified by thyroid function and imaging. Pituitary hyperthyroidism suggests elevated TSH, elevated free thyroid hormone FT4, free triiodothyronine FT3, and pituitary nuclear magnetism can be seen to be abnormal; thyroid hyperthyroidism thyroglycerine function shows decreased TSH, elevated FT3, FT4, and pituitary nuclear magnetism does not show pituitary abnormalities.
Pituitary hyperthyroidism is a pituitary lesion that secretes too much TSH, which acts on the thyroid gland to cause the secretion of too much thyroid hormone, causing hypermetabolism and sympathetic excitation of the body. Usually, the thyroid function shows elevated TSH, elevated FT3 and FT4, and pituitary abnormalities can be seen on pituitary MRI, such as pituitary tumors, and some of the pituitary hormones such as adrenal hormone and gonadotropin are elevated.
Thyroid hyperthyroidism is the thyroid itself lesions synthesize and secrete too much thyroid hormone, resulting in hypermetabolism and sympathetic excitation symptoms, usually thyroid function manifests as a decrease in TSH, FT3, FT4 elevation, there may also be thyroid autoantibodies suggestive of a positive thyroid ultrasound can be seen in the thyroid changes, but the pituitary nuclear magnetism did not see any abnormality.
Whether it is pituitary hyperthyroidism or thyroid hyperthyroidism, the cause should be clarified and treated under the supervision of a doctor.