Hello, The main effects of parathyroid hormone are to increase the concentration of plasma calcium by increasing the release of calcium and phosphate from bone matrix, increasing calcium reabsorption by the kidney, and increasing renal production of 1,25-dihydroxyvitamin D-3 (calcitriol), which increases intestinal absorption of calcium. Thus, overproduction of parathyroid hormone results in elevated levels of plasma calcium.  Two types of hyperparathyroidism exist. In primary hyperparathyroidism, an enlargement of one or more of the parathyroid glands causes overproduction of the hormone resulting in high levels of calcium in the blood (hypercalcemia). Secondary hyperparathyroidism is a result of another disease that causes low levels of calcium in the body.  Symptoms may be mild to severe and range from... Kidney Stones,excess urination,joint pains,nausea,vomiting etc. Investigations required are 24 hour urine calcium levels,ultrasound and CT of parathyroid glands etc Since your calcium levels are high,you seem to be having primary hypereparethyroidism. If symptoms are mild then you are simply put on observation but if they are severe,then surgery is the answer. Drugs used are CACIMIMETICS and BISPHOSPHONATES. It is your doctor to decide the mode of treatment. Thanks