Causes of high thyroid-stimulating hormone, or TSH, levels include hypothyroidism, excess anti-thyroid medication and a tumor in the pituitary gland, according to LabTestsOnline. TSH is produced in the pituitary gland, a... More »

Some conditions that cause high levels of TSH in the body are Hashimoto's disease, thyroid nodules and hypothyroidism, states Healthline. High levels of TSH, or thyroid-stimulating hormone, are usually accompanied by low... More »

Treatment for high TSH thyroid levels, also known as hypothyroidism, typically involves thyroid replacement medication such as levothyroxine or synthroid, which are synthetic thyroid hormones, according to Healthline. Th... More »

Causes of low thyroid-stimulating hormone, or TSH, levels include hyperthyroidism; a damaged pituitary gland that is unable to make TSH, called secondary hypothyroidism; and taking excess thyroid medicine when treating a... More »

According to WebMD, high TSH (thyroid-stimulating hormone) levels indicate an underactive thyroid gland (hypothyroidism). Common symptoms include feeling weak, tired or depressed, sensitivity to cold, constipation, britt... More »

Causes of high levels of thyroid-stimulating hormone include hypothyroidism, a tumor in the pituitary gland, or a need to increase the amount of thyroid hormone medicine, according to WebMD. The pituitary gland produces ... More »

According to About.com, low levels of TSH, or thyroid-stimulating hormone, occur when the pituitary gland shuts down TSH production due to high levels of thyroid hormone in the blood. The low levels of TSH are the pituit... More »