A patient is lethargic, frequently complains of cold sensati…
A patient is lethargic, frequently complains of cold sensations, and has gained significant weight over the last several months. A TSH found to be low and their thyroid hormone level is also found to be low. The patient is infused with thyrotropinin releasing hormone (TRH) and the TSH level increased after this infusion. This would be considered a ____ form of hypothyroidism.