Arachnodactyly refers to slender, spider-like fingers. Arachnodactyly may be isolated or occurs in association with other diseases. These diseases include: - Marfan syndrome - Ehlers-Danlos syndrome - Loeys-Dietz syndrome - congenital contractual arachnodactyly - homocystinuria Reference: https://en.wikipedia.org/wiki/Arachnodactyly#Causes Image via: https://www.spandidos-publications.com/10.3892/mmr.2018.9041