Johnson neuroectodermal syndrome

Definition

A rare neuroectodermal syndrome characterized by hypotrichosis/alopecia, hyposmia/anosmia, conductive deafness associated with protruding ears, microtia, and/or atresia of the external auditory canal, hypogonadotropic hypogonadism, and a greater than normal tendency to dental caries. Some patients may also present with mild facial asymmetry, cleft palate, facial nerve palsy, congenital heart defect, multiple truncal café-au-lait spots, and developmental delay/intellectual deficiency.