triggering seizures like one utah man who passed out and began convulsing. >> i was shaking and mumbling different noises. >> reporter: same thing happened to this man in california. >> next thing i know i am wake up to everyone shaking me in the theater looking at me. >> reporter: last thing he remembers, bella's graphic birthing scene where flashes of red, black, white lights flicker on the screen almost like a strobe light. >> convulsing, snorting. trying to breathe. >> reporter: experts say brandon likely suffered a photo sensitive epileptic seizure. >> red is one of the most provocative colors to trigger seizures. >> reporter: not the first time people have gotten sick from their favorite flicks. in "avatar," one man reportedly died while watching this movie. his doctors blaming overexcitement. and in 2008, "cloverfield," a thriller about a monster attack in new york city. there is even a face book page called "cloverfield made me sick." this guy writes, "loved the movie, hated what it did to my stomach." the next time brandon's girlfriend wants to go to a movie maybe he should choose