` ` The cause of death was suicide , '' the New York City medical examiner 's office says . He won acclaim for his books ' portrayal of teenage girls . ` ` It 's Kind of a Funny Story '' was adapted into a film starring Emma Roberts . Amid his success , he began to experience depression .
`` The manner of death was suicide , '' the New York City medical examiner 's office says . He won accolades for his books ' portrayal of teenage depression . `` It 's Kind of a Funny Story '' was adapted into a movie starring Emma Roberts . Amid his success , Vizzini continued to battle depression .