craniosynostosis (countable and uncountable, plural craniosynostoses)
(pathology) A medical condition in which some or all of the sutures in the skull of an infant close too early, causing problems with normal brain and skull growth.
Shane is one of Darren's musical inspirations, after he overcame a childhood hearing problem - Craniosynostosis - which has left him partially deaf in his left ear. Source: Internet