Oftentimes, hypomagnesemia has been known to occur in conjunction with other electrolyte abnormalities such as hypocalcemia and hypokalemia: hypocalcemia due to reduction in the release of parathyroid hormone and hypokalemia due to increased urinary excretion of potassium due to inhibition of renal medullary potassium channels [3]. Here, PTH is linked to familial primary hypomagnesemia.