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Tetany is a nervous affection characterized by intermittent tonic spasms, usually involving the extremities. It is most frequently found in the young and is also associated with pregnancy or lactation. Tetany is induced by changes in PH and extracellular calcium which increase nervous and muscular excitability.

Causative factors are parathyroid deficiency, alkalosis or vitamin D deficiency. Tetany is characterized by nervousness, irritability, apprehension, numbness, tingling, and muscle cramps. Various forms exist.

Thomas, C.L. 1985. Taber's Cyclopedic Medical Dictionary. F.A. Davis Co. Pub., Philadelphia. 2170.


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