Because of a lapse in government funding, the information on this website may not be up to date, transactions submitted via the website may not be processed, and the agency may not be able to respond to inquiries until appropriations are enacted.

The NIH Clinical Center (the research hospital of NIH) is open. For more details about its operating status, please visit cc.nih.gov.

Updates regarding government operating status and resumption of normal operations can be found at OPM.gov.

Hypoparathyroidism

Hypoparathyroidism is a rare condition caused by the body’s not making or releasing enough parathyroid hormone (PTH).

PTH maintains normal blood levels of calcium, phosphorus, and magnesium through its actions on the bone and kidney.