Marfan syndrome was first described in 1896 by French pediatrician Antoine Marfan.

Who discovered it?

  • Antoine Bernard-Jean Marfan (1858–1942) was a French pediatrician practicing in Paris.
  • In 1896, he presented the case of a 5‑year‑old girl with unusually long limbs and fingers, describing a condition he called dolichostenomelia , which later became associated with what is now known as Marfan syndrome.

A small historical twist

  • Modern reevaluation suggests that Marfan’s original patient probably had a related connective tissue disorder (congenital contractural arachnodactyly, or Beals syndrome) rather than true Marfan syndrome.
  • Despite this, the name “Marfan syndrome” was adopted in the early 20th century and remains the standard term worldwide to honor his early description.

TL;DR: The answer to “who discovered Marfan syndrome” is Antoine Marfan, even though later work refined what counts as “true” Marfan syndrome.

Information gathered from public forums or data available on the internet and portrayed here.