Ívar Sævarsson

Soffía Guðrún Jónasdóttir

Berglind Jónsdóttir

¹Department of Internal Medicine, National University Hospital of Iceland, Reykjavik, ²Childrens Hospital Hringurinn, National University Hospital of Iceland, Reykjavik.

Correspondence: Ívar Sævarsson, ivars@landspitali.is

Key words: congenital hypoaldosteronism, neonatal weight loss, aldosterone synthase.

The Neonatal weight loss is a common problem which most physicians who take care of newborns should recognise. The most common reason is insufficient dietary intake. However the reason can also be an underlying disease. Aldosterone insufficiency in neonates is a rare disease and if not treated correctly can be life threatening. It presents with serious electrolytes abnormalities and metabolic acidosis. It is therefore important to distinguish between serious and benign causes of weight loss in neonates.