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We report three children presenting with hypocalcemia, hyperphosphatemia, elevated levels of parathyroid hormone, low concentrations of 25(OH)-vitamin D, normal to elevated concentrations of 1,25(OH)2-vitamin D, and normal radiographs. Although these findings led to consideration of parathyroid hormone resistance, clinical and biochemical findings remained normal after discontinuation of therapy, suggesting a variation of vitamin D deficiency.

A Variation of Vitamin D Deficiency in Children