Craniosynostosis, Herrmann-Opitz type is a rare bone development disorder characterized by intellectual disability, short stature, turribrachycephaly, facial dysmorphism (i.e. severe hypertelorism, hypoplasia of supraorbital ridges, abnormal ears, and micrognathia), bony defects of the occiput, and digital anomalies (incl. syndactyly, oligodactyly, and/or brachydactyly). Urethral atresia has also been reported. There have been no further descriptions in the literature since 1987.

Cleft palate is a developmental defect of the palate resulting from a failure of fusion of the palatine processes and manifesting as a separation of the roof of the mouth (soft and hard palate).