Hypoparathyroidism (hypoPT) and pseudohypoparathyroidism (Ps-hypoPT) are rare diseases, characterized by low levels of parathyroid hormone \[PTH\] and plasma calcium or high plasma PTH and low plasma calcium, respectively. A recently study by the investigators' group, identified 123 living persons with idiopathic hypoPT and 62 living persons with Ps-hypoPT, only few of these have been genetic tested. The aim of the study is to perform a detailed clinical and genetic characterization of Danish patients with idiopathic hypoPT and Ps-hypoPT. Patients will be examined by questionnaires, biochemistry, scans, bone biopsies and genetic tests. Furthermore the investigators aim to perform family tracing for the hereditary forms. The prevalence of magnesium depletion will be assessed as well. In addition to providing new information on symptoms, co-morbidity, and prognosis for this group of patients, the investigators presume that the study may improve their understanding on calcium homeostasis and bone metabolism in general.
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Study of patients (clinical characterization) with idiopathic hypoPT, ADH and pseudohypoPT
Timeframe: 3 years