Pfeiffer syndrome (PS) is a common form of acrocephalosyndactyly, a group of inherited congenital malformation disorders, characterized by variable degrees of bicoronal craniosynostosis, variable hand and foot malformations and various other associated manifestations. The disease is MONDO_0007043 (Pfeiffer syndrome). Also known as: ACS5, acrocephalosyndactylia type V, acrocephalosyndactyly type 5, acrocephalosyndactyly type V, type V Acrocephalosyndactyly.