The incidence is 6 out of 100,000 people. There is no known prevention. A radioimmunoassay of parathyroid hormone that shows an increased level. Serum calcium is increased. Serum chloride may be increased.
Serum phosphorus is decreased.
Serum alkaline phosphatase may be increased. Bone X-ray shows bone reabsorption or fractures . Imaging of the kidneys or ureters shows calcification or obstruction. ECG may show abnormalities. Treatment depends upon the severity and cause of the condition.