Vitamin D-dependent rickets: a resurgence of the rachitic lung in the 21st century.

Respiratory complications of rickets may be life-threatening particularly in developing countries. A 7-month-old boy presented with recurrent infections, seizures, failure to thrive, wheezing and respiratory distress progressing to global respiratory failure. Several antimicrobial regimens, bronchodilators and corticosteroids resulted in only short-term improvement.