The girl who couldn't stop laughing

A six-year-old Bolivian girl presented with an unusual medical symptom: uncontrollable and inappropriate fits of laughter. “She was considered spoiled, crazy, even devil-possessed,” according to those who knew her. Then medical researchers discovered a hamartoma -- a small tumor pressing on the temporal lobe of her brain.

Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/2...