In a sunlit school classroom, a child bursts into laughter, sudden, eerie, and entirely unprovoked. There’s no joke, no punchline, no mischief. What seems like quirky behaviour draws giggles from ...

Gelastic cataplexy is a sudden loss of muscle tone without loss of consciousness triggered by laughter. It’s a characteristic sign of a rare genetic disease called Niemann Pick disease type C.

In a remarkable medical achievement, All India Institute of Medical Sciences Jodhpur has successfully treated four children suffering from a rare and distressing neurological condition known as ...