Craniosynostosis is a congenital condition characterized by the premature fusion of one or more of the sutures between the bones of an infant's skull. Sutures are the fibrous joints that allow the skull to expand during the rapid brain growth that occurs in the first few years of life. Premature fusion restricts normal skull development and can result in an abnormal head shape. The exact cause of craniosynostosis is often unknown, but genetic factors and certain syndromes may contribute. Diagnosis involves clinical examination, imaging studies, and sometimes genetic testing. Treatment typically involves surgical intervention to correct the fused sutures and reshape the skull. Early intervention is crucial to allow for normal brain development and prevent potential complications. Craniosynostosis requires a multidisciplinary approach involving pediatricians, geneticists, and craniofacial surgeons. Long-term outcomes are generally positive with appropriate and timely management, although the specific prognosis depends on the severity of the condition and any associated syndromes.