Cinemas in the US have been forced to display seizure warnings for the new Incredibles film for viewers with photosensitive epilepsy.
It comes after several people who have seen Incredibles 2, which is released in the UK next month, expressed concerns on Twitter about flashing images in the film.
The Epilepsy Foundation also issued a statement advising "viewer caution" and said there had been instances of people "having experienced a seizure during the movie".
"We stand with our epilepsy warriors and their families as they voice their concerns about the movie and appreciate the efforts some theatres have already made to post warning signs for people waiting to see the movie," the charity said.
@DisneyPixar Im bummed that you didnt think to put out a warning about Incredibles 2 for those who suffer from epilepsy. Im so sad that I wont be able to take my daughter whos been excited for weeks because she has epilepsy and we dont want to trigger a seizure.
— Kate Bettencourt (@KateNicoleBee) June 16, 2018
One Twitter user wrote: "HEALTH ALERT I haven't seen this mentioned in a lot of places, but the new Incredibles 2 movie is filled with tons of strobe/flashing lights that can cause issues for people with epilepsy, migraines, and chronic illness."
"Incredibles 2 was a super fun movie BUT WHAT THE *HELL* DISNEY NOT PUTTING IN AN EPILEPSY WARNING," another viewer said.
One disappointed mother said she was "sad" she could not take her epileptic daughter to see the animated Disney-Pixar film.
"I'm bummed that you didn't think to put out a warning about Incredibles 2 for those who suffer from epilepsy," she said.
also Incredibles 2 was a super fun movie BUT WHAT THE *HELL* DISNEY NOT PUTTING IN AN EPILEPSY WARNING
— nel @ playing p4g again help (@nelwelfel) June 17, 2018
"I'm so sad that I won't be able to take my daughter who's been excited for weeks because she has epilepsy and we don't want to trigger a seizure."
After several reports on social media, cinemas began to put up their own warnings to people going to see the long-awaited sequel.
"Major shoutout to the Jordan Creek movie theater for posting epilepsy warning signs for Incredibles 2. Thanks for lookin out for those of us with epilepsy," one viewer wrote.
Disney has not yet commented.
HEALTH ALERT I havent seen this mentioned in a lot of places, but the new Incredibles 2 movie (#incredibles2) is filled with tons of strobe/flashing lights that can cause issues for people with epilepsy, migraines, and chronic illness. This thread is spoiler free
— Veronica Lewis (@veron4ica) June 15, 2018
The sequel picks up the story of the Parr family as matriarch Helen, voiced by Holly Hunter, is called upon to help bring the world's hiding superheroes back into the open, and husband Bob (Craig T Nelson) navigates the day-to-day work of being a homemaker.
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Their children Violet (Sarah Vowell) and Dash (Huck Milner) are back again, along with baby Jack-Jack, whose devastating super powers are about to be unleashed.
The film smashed box office records in its opening weekend in the US, raking in $182.7m – making it the highest ever opening for an animated film.
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