Rickets are caused by conditions that impair the body's ability to absorb vitamin D. Rickets is a rare condition that is commonly seen in children ages 6-24 months. You can find more information here: http://www.nlm.nih.gov/medlineplus/ency/article/000344.htm http://www.mayoclinic.com/health/rickets/DS00813/DSECTION=causes
