Primary hyperparathyroidism (PHPT) is among the common endocrine disorders caused by excessive production of parathyroid hormone in the presence of elevated serum calcium level.1 It can be caused by single gland adenoma (85-90%),1-3 multi gland disorder (10-15%) or parathyroid carcinoma (5%).
Depending on the extent of parathyroid gland damage, hypocalcaemia may be transient, resolving within a few months, or permanent, lasting for longer than 1 year, sometimes requiring lifelong oral calcium and vitamin D supplementation.
Hyperparathyroidism is defined as an increased level of parathyroid hormone and can be classified as primary, secondary, and tertiary hyperparathyroidism.
The symptoms includes cramps, tingling sensation, paresthesia, tetanic contractions, seizures, muscle spasms, and prolong QT interval prolongation on electrocardiogram.7 The most common cause of postthyroidectomy is injury to parathyroid gland.
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