AbstractExcessive secretion of Parathyroid Hormone may be primary due to adenoma orhyperplasia of the parathyroid glands, secondary due to persistent hypocalcaemia ortertiary when secondary hyperplasia leads to autonomous over activity of the glands.Whatever the cause increase PTH production leads to hypercalcaemia. This may besymptomless or may present with bizarre symptoms such as psychosis, renal stones,anorexia, abdominal pain, polyurea, osteoporosis, pathological fractures and deformities.
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