Neonatal Marfan syndrome (also called infantile Marfan syndrome) is a term used to designate a severe presentation of Marfan syndrome that is evident in early infancy and shows rapid progression during childhood. 

Importantly, there are no specific criteria for use of this term. As a result, it is difficult to make broad generalizations about the diagnosis, management, or prognosis of neonatal Marfan syndrome. Download the fact sheet to learn more.