The symptoms: The woman visited a clinic because she had long experienced bursts of uncontrollable laughter, which doctors described as "mirthless" in a report of her case. According to the patient, ...

Laughter you can’t resist! Watch these women burst into uncontrollable laughter — and try not to join them! Sometimes the best moments are the real, unexpected ones that make everyone lose it.

A woman in her thirties has lived her entire life with uncontrollable laughing fits that defied all medical explanation. These strange episodes, occurring since her earliest childhood, were ...