Vitamin D deficiency
Vitamin D deficiency results from lack of exposure to sunlight, impaired vitamin D absorption in individuals with small bowel resection, celiac disease or cystic fibrosis, medications that impair vitamin D absorption such as Dilantin, and low dietary intake such as in exclusively breast-fed infants (there is minimal vitamin D in breast milk). Individuals at highest risk are those who are institutionalized or elderly or those with more darkly pigmented skin.
Patients with vitamin D deficiency are often asymptomatic, but children may present with a bowing of the leg, a preference to sit, and rickets, while adults may present with chronic muscle aches and pains.
E55.9 – Vitamin D deficiency, unspecified
34713006 – Vitamin D deficiency