What Is Secondary Thyroid Disease?
What Is Secondary Thyroid Disease? Secondary hypothyroidism occurs when the hypothalamus produces insufficient thyrotropin-releasing hormone (TRH) or the pituitary produces insufficient TSH. Sometimes, deficient TSH secretion due to deficient TRH secretion is termed tertiary hypothyroidism. What are the symptoms of surgically induced hypothyroidism? The most common include: abnormal fatigue and excessive sleeping, constipation, joint pain,