- Hyperparathyroidism is not an uncommon disorder. It is more common in women, and in the older population its incidence can be as high as 1 in 1000.
- In the majority of cases the cause of hyperparathyroidism is not known. In
most people, hyperparathyroidism occurs sporadically.
- In some cases, however, there can be a genetic basis for developing the disorder. A rare inherited syndrome called familial multiple endocrine neoplasia type 1 (MEN I) is associated with hyperparathyroidism.
- In some cases, all four of the parathyroid glands are somewhat enlarged and secrete excessive amounts of hormones. This is referred to ashyperplasia.
- In other cases, one of the four glands functions autonomously, and produces excessive hormone on its own. Usually this gland is enlarged and is referred to as anadenoma (a type of benign tumor).
Medically Reviewed by a Doctor on 10/5/2015
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