Hypoparathyroidism

Insufficient production of parathyroid hormone by the parathyroid glands. A deficiency of this hormone results in low levels of calcium in the blood ( hypocalcaemia). The most common cause of hypoparathyroidism is damage to the parathyroid glands during surgery. Occasionally, the parathyroid glands are absent from birth, or they may cease to function for no apparent reason. A low blood calcium level may cause tetany. Occasionally, seizures similar to those of an epileptic attack may occur. The condition is diagnosed by blood tests. To relieve an attack of tetany, calcium may be injected slowly into a vein. To maintain the blood calcium at a normal level, a lifelong course of calcium and vitamin D tablets is necessary.