The cases of normocalcemic parathyroid adenoma are recently been recognized with increasing frequency. Present case report discusses parathyroid adenoma presenting with hypocalcemia and severe hypovitaminosis D in a 30 year old female with markedly raised parathormone. The case presented with pathological fracture of upper end of humerus and generalized osteoporosis. A well defined hypoechoic mass lesion was noted on inferior aspect of the right thyroid gland on ultrasonography of neck. The mass enucleated at bilateral neck exploration revealed well capsulated chief cell parathyroid adenoma.