EDA and X-linked hypohidrotic ectodermal dysplasia: A clinical phenotype associated with EDA gene mutation is X-linked hypohidrotic ectodermal dysplasia (XLHED), also named as anhidrotic/hypohidrotic ectodermal dysplasia (HED), which is the most common genetic disorder of ectodermal development in humans resulting in hypotrychosis, hypodontia, heat intolerance, dry skin, susceptibility to airways infections and crusting of various secretions [36].