Recently studies have shown that over half of infants, children and teenagers may be inadequately supplemented. A high prevalence of
vitamin D deficiency in children has been observed worldwide, even in sunny countries. Regardless of the recommendations,
vitamin D supplementation is sometimes underestimated, supporting the idea that for children in sunny country it is unnecessary. In the modern area of supplementation,
tetany seems to be a problem of the past. Usually it occurs at 3 to 6 months of age, that's why diagnostic suspicion may be low after this age. We report a case of severe
hypocalcemia presented with
tetany, in an18-months-old child with severe
vitamin D deficiency, because of not receiving
vitamin D as supplementation. With underestimation of
vitamin D supplementation,
tetany may emerge again. Through our report we aim to highlight the aggressive approach to tetanic
hypocalcemia in children with
vitamin D deficiency and to sensitize a rigorous surveillance in order to ensure adequate
vitamin D supplementation by pregnant, breastfeeding mothers, children and adolescents.