Congenital rickets due to maternal vitamin D deficiency.

Objective: Rickets due to vitamin D deficiency is an important cause of the infantile hypocalcemia, but congenital rickets is not so common. Vitamin D deficiency may present with hypocalcemia and sometimes with hyperphosphatemia because of the inadequate response of parathyroid hormone to hypocalcemia during early infancy. We report a case of congenital rickets due to maternal vitamin D deficiency. Case: The patient was admitted with hypocalcemic seizure at 10 days of age. Both the baby and her mother had low 25(OH) vitamin D3 levels. Conclusion: Vitamin D deficiency should be considered primarily in the differential diagnosis of neonatal hypocalcemia, particularly in those areas where maternal vitamin D deficiency is common.