A 12 ½ year old male with cystic fibrosis presented with growth failure after itraconazole was added to a treatment regimen including inhaled and intranasal glucocorticoids. Investigations showed severe adrenal suppression. This case demonstrates the potential for exogenous glucocorticoids to accumulate when their degradation is inhibited by a CYP3A4 inhibitor.
Keywords: Adrenal suppression; Cystic fibrosis; Glucocorticoid; Growth failure; Itraconazole.
Copyright © 2014 European Cystic Fibrosis Society. Published by Elsevier B.V. All rights reserved.