i understand your concern The thyroid is a gland in the neck that makes two different hormones that help regulate the metabolism. The thyroid makes these hormones in response to another hormone, known as thyroid stimulating hormone or TSH, which is produced by the pituitary gland. There are several medical conditions that can result in elevated TSH levels in the body. Persistent elevation of TSH levels in patients under treatment for hypothyroidism is a relatively common.The most common cause for is poor patient compliance with their thyroid hormone tablets. In the compliant patient, however, multiple aetiologies are possible. When there are insufficient levels of thyroid hormones in the blood, the pituitary will produce additional TSH in an attempt to kick-start the thyroid. The most common cause of hypothyroidism is called Hashimoto s disease, in which the immune system attacks the thyroid. The thyroid can also become inflamed, resulting in low thyroid hormone production. Certain medications can also result in low thyroid hormone secretion. Finally, some people have thyroids that don t function properly, for reasons that physicians do not entirely understand, this is called idiopathic hypothyroidism. However, in some cases a pituitary adenoma will secrete TSH, resulting in high TSH levels in addition to high levels of thyroid hormone. In such cases, the pituitary adenoma does not stop secreting TSH in the presence of high thyroid hormone levels. You need to talk to your doctor and get a thyroid work up done to dectect the underlying etiological cause as well as be compliant with your prescribed medication Take Care!