article_snippet: A teenager collapses to the floor every time A teenager laughs due to a rare medical condition.
article_snippet: Jodie Kelly, 19, from Dublin, suffers muscle paralysis and keels over nearly ten times a day - usually after laughing.
article_snippet: Miss Kelly first suffered an attack while laughing at a joke in the film 'Harry Potter and the Half-blood Prince'.
article_snippet: Jodie Kelly, 19, collapses every time Miss Kelly laughs due to the rare medical condition cataplexy, which means sudden loss of muscle control .
highlights_snippet: Jodie Kelly has the condition cataplexy -  a sudden loss of muscle control .
  
highlights_snippet: It causes Jodie Kelly to collapse when Jodie Kelly experiences strong emotions, including anger and laughter - meaning Jodie Kelly avoids sad films and comedy shows .
  
highlights_snippet: Has learnt to control Jodie Kelly falls so Jodie Kelly doesn't hurt hurself when collapsing .
  
highlights_snippet: Also has narcolepsy which means Jodie Kelly needs to sleep for hours at a time .