title: Nutritional rickets in San Diego.
abstract: Despite the ability of infants to synthesize vitamin D through exposure to sunlight, nutritional rickets occasionally develops in infants even in areas with perennially sunny climates. In San Diego, a 1-year-old breast-fed infant presented with classic signs of nutritional rickets. Unsupplemented breast milk, limited exposure to sunlight, and darkly pigmented skin were predisposing factors. Because of this occurrence, we conducted a survey of vitamin supplementation practices among pediatricians in San Diego. Twenty-nine percent of 160 respondents do not prescribe vitamin D supplements for breast-fed infants. Those in practice less than ten years were even less likely to prescribe a vitamin supplement compared with their older colleagues. The patient report, coupled with a literature review, suggest the need for vitamin D supplementation for all nursing infants.
mesh_terms: D002140:California; D006801:Humans; D007223:Infant; D007227:Infant Nutritional Physiological Phenomena; D008297:Male; D012279:Rickets / Q000209:etiology*; D012880:Skin Pigmentation; D013472:Sunlight; D014807:Vitamin D / Q000008:administration & dosage
chemical_list: D014807:Vitamin D