[An uncommon cause of hypocalcemic convulsion: congenital rickets. Case report].

Vitamin D deficiency and rickets are major health problems in developing countries. Congenital rickets is a rare form of rickets. Maternal vitamin D deficiency is the most important risk factor for vitamin D deficiency and rickets in newborns and early infancy. In this report, we presented a two-month old infant with seizures while hospitalized for pulmonary infection. Finally, congenital rickets due to maternal vitamin D deficiency was diagnosed.