REVERSIBLE DEMENTIA IN IDIOPATHIC HYPOPARATHYROIDISM ASSOCIATED WITH NORMOCALCEMIA

Dementia in idiopathic hypoparathyroidism is generally ascribed to hyp ocalcemia and improves following normalization of the serum calcium le vel. We report a 51-year-old man with severe dementia and hypoparathyr oidism, but without serum hypocalcemia and without clinical signs of h ypocalcemia. There was rapid and sustained improvement and normalizati on of symptoms after therapy with 1,25-dihydroxy-cholecalciferol. We c onclude that hypocalcemia is not the sole cause of dementia in idiopat hic hypoparathyroidism.