This disease was first observed in 1878 by the neurologist Dr. George Miller Beard, a guy I will definitely talk about again, in French-Canadians, lumberjacks and presumably some French-Canadian lumberjacks living in northern Maine. So that explains the “Frenchman” and “Maine” parts but lets look at what makes this a “Jumping Syndrome”.

This is the famous jumping Frenchman Patrick de Gayardon. He has nothing to do with this story. Left Right.
This syndrome is due to an exaggerated startle reflex resulting in uncontrolled jumps commonly but can also manifest as spasms throughout the body. The startle reflex is very important and forms part of the ‘fight or flight response’ normally…
For the remainder of this piece head to diseaseprone.fieldofscience.com