Although the literature does provide some support for pump therapy with rhPTH(1-34) as an effective treatment for hypoparathyroidism outside of clinical trials, we believe this to be one of the most extensive case series on PTH pump therapy and the first report on the effects of pump therapy with rhPTH(1-84) in patients with chronic hypoparathyroidism. Here, PTH is linked to hypoparathyroidism.