Father brings son with no teeth, periorbital wrinkles, dry skin. Most likely diagnosis?

Hypohidrotic ectodermal dysplasia (HED): TRIAD = hypodontia/anodontia + hypohidrosis (no sweating) + hypotrichosis (sparse fine hair). Also: dry skin, periorbital wrinkling/hyperpigmentation, saddle nose, frontal bossing. X-linked most common form; males most severely affected.