| VITAMIN D DISORDERS |
| Nutritional vitamin D deficiency |
| Congenital vitamin D deficiency |
| Secondary vitamin D deficiency |
| Malabsorption |
| Increased degradation |
| Decreased liver 25-hydroxylase |
| Vitamin D–dependent rickets type 1 |
| Vitamin D–dependent rickets type 2 |
| Chronic renal failure |
| CALCIUM DEFICIENCY |
| Low intake |
| Diet |
| Premature infants (rickets of prematurity) |
| Malabsorption |
| Primary disease |
| Dietary inhibitors of calcium absorption |
| PHOSPHORUS DEFICIENCY |
| Inadequate intake |
| Premature infants (rickets of prematurity) |
| Aluminum-containing antacids |
| RENAL LOSSES |
| X-linked hypophosphatemic rickets |
| Autosomal dominant hypophosphatemic rickets |
| Hereditary hypophosphatemic rickets with hypercalciuria |
| Overproduction of phosphatonin |
| Tumor-induced rickets |
| McCune-Albright syndrome |
| Epidermal nevus syndrome |
| Neurofibromatosis |
| Fanconi syndrome |
| Dent disease |
| DISTAL RENAL TUBULAR ACIDOSIS |
Reference:
Nelson Textbook of Pediatrics 18th Edition