Netherton Syndrome in a Mother and Her Two Children.

Netherton syndrome (NS) is a rare autosomal recessive condition caused by mutations in the serine peptidase inhibitor, Kazal type 5 (SPINK5) gene which encodes for a serine protease inhibitor, lymphoepithelial Kazal-typerelated inhibitor (LEKT1). NS is characterized by a triad of ichthyosiform erythroderma, trichorrhexis invaginata, and atopic diathesis with elevated IgE levels. The syndrome typically presents in infancy, where life-threatening complications are frequent, and evolves into a less severe condition with milder clinical symptoms in adulthood. This case report details the clinical history and genetic testing of a mother and two children with clinically symptomatic and genetically proven NS.