Familial Hypophosphatemic Vitamin D Resistant Rickets

Summary Survey of all available data of infants with familial hypophosphatemia vitamin D resistant rickets observed partially or throughout the first year of life indicates that hypophosphatemia begins in the neonatal period regardless of whether or not the mother had been treated with vitamin D in high doses. Growth failure in vitamin D resistant rickets cannot be prevented even when treatment with high doses of vitamin D is begun early.