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20 Diseases You've Probably Never Heard Of

1

Jumping Frenchmen of Maine

This disease was first identified in the late 1800s among an isolated group of French Canadian lumberjacks.
This disease was first identified in the late 1800s among an isolated group of French Canadian lumberjacks.
Hemera Technologies/AbleStock.com/Thinkstock

This very rare disorder is characterized by an unusually extreme "startle" reaction. It was first identified in the late 1800s among an isolated group of French Canadian lumberjacks. The exact cause of jumping Frenchmen of Maine is unknown. One theory is that the disorder occurs because of an extreme conditioned response to a particular situation influenced by cultural factors.

Read More About the Disease From NORD

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