Profilassi con vitamina D nel lattante: l’importanza di capirsi bene

The paper describes a case of intoxication from vitamin D in a 35-day infant of exclusive breastfeeding life who was administered 8000 IU of vitamin D per day over 4 weeks. There was an important linguistic barrier with her mother. The clinical picture was exclusively characterized by constipation, with adequate growth. Laboratory investigations showed calcemia at upper limits (11.1 mg/dl), elevated levels of 25-OH vitamin D3 (25-OH), equal to 375 µg/l, and renal ultrasound finding compatible with microlithiasis. The clinical picture was resolved with an intravenous hydration and suspension of vitamin supplementation. The case shows that in a situation in which there is a condition of family vulnerability it is necessary to make sure that any prescription has been correctly understood.