Patients with thyroid disorders may experience increased blood pressure, especially in patients with hyperthyroidism, because the neurohumoral endocrine system is dysregulated and the sympathetic nerves become overexcited. In patients with hyperthyroidism, activation of the renin-angiotensin-aldosterone system may also occur, and patients may experience secondary increases in blood pressure. In patients with thyroid dysfunction, such as when the patient has unstable thyroid function or is taking thyroid hormone medication, a series of changes such as unstable and fluctuating increases in blood pressure may also occur. For endocrine metabolic organs such as the thyroid gland when there is a functional imbalance, the patient’s blood pressure will change secondary to this, at which time regular antihypertensive medication must be taken, which can be gradually discontinued after the primary disease and thyroid function return to normal.