[Hungry bone syndrome due to vitamin-D deficiency].

An 85-year-old woman was admitted after being bedridden for six months with muscular weakness and diarrhoea. Vitamin 25-OH-D, serum calcium, magnesium and phosphate were low, and parathyroid hormone as well as alkaline phosphatase were increased. Dual x-ray absorption scan showed reduced bone mineral density. The patient was treated with calcium, magnesium and vitamin D, initially intravenously and subsequently as tablets. Clinically the patient's condition slowly normalized. Remineralization of the skeleton resulted in consistent hypocalcaemia for more than nine months.