Hypoparathyroidism, or insufficient secretion of parathyroid hormone, leads to increased nerve excitability. The low blood calcium levels trigger spontaneous and continuous nerve impulses, which then stimulate muscle contraction.
Hyperparathyroidism is the excessive secretion of parathyroid hormone, ususually due to a small tumor in one of the parathyroid glands. It results in hypercalcemia.
Parathyroidectomy is the surgical removal of the parathyroid glands, usually as part of the treatment of hyperparathyroidism.
Related category• ANATOMY AND PHYSIOLOGY
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