<prompt> Most common cause of craniosynostosis is?PlagiocephalyBrachycephalyScaphocephalyTrigonocephaly  <response>: Craniosynostosis refers to the premature fusion of cranial sutures resulting in abnormal head shapes since the brain cannot grow normally. Dolichocephaly scaphocephaly- it is premature fusion of the sagittal suture resulting in increased anteroposterior diameter mc type Brachycephaly- is premature fusion of the coronal suture, resulting in square type of brain Trigonocephaly - is premature fusion of the metopic suture, resulting in triangular type of brain Turricephaly oxycephaly- is premature fusion of sphenofrontal sphenoethmoidal suture, Plagiocephaly: it is not a type of craniosynostosis but Asymmetric head shape due to any pathology. 