“Coma,” a pandemic-themed horror movie by the director Bertrand Bonello, takes its title from one of its two cloistered characters living in France during the coronavirus lockdown. Patricia Coma (Julia Faure) is a social media influencer whose channel is made up of surreal how-to videos, philosophical monologues and weather reports (though it doesn’t matter, “you can’t go out, anyway,” she explains).

Watching Patricia is an unnamed teenage girl (Louise Labèque), moody and introspective as she spends her days in confinement glued to the screen.

Don’t be misled by the more conventional pandemic scenes, like the teenager’s video chats with friends — “Coma” pushes the boundaries of the so-called lockdown movie with its thrilling, chaotic form.

At first, it seemingly tracks the teenager’s online interactions: Patricia’s uncanny missives and a smutty sitcom played out by stop-motion dolls. We also see the teenager’s recurring nightmare, in which she’s trapped in a purgatorial forest, as well as surveillance footage in which she appears to be out in the streets.

With Bonello’s fluid editing, the gradual spillover between scenes and intrusions by reality itself — then-President Trump’s tweets play a role — seems to flatten time. That’s certainly become a cliché in films like “Locked Down” or Bo Burnham’s “Inside,” but Bonello’s experimental approach brings a new level of desperation to this compressed version of reality.

As a relatively short, minimalistic production, “Coma” plays like an amuse-bouche to Bonello’s recent epic “The Beast,” about the tragedy of characters who lack free will. Patricia is a kind of evangelist for this worldview. She sells an electronic memory game, like Simon, that the teenager plays to kill time, but, as if by some kind of dark magic, cannot seem to lose.

The film begins and ends with a subtitled message written by Bonello to his daughter, to whom he dedicated the film. It acknowledges the unique despair of her generation — of children accustomed to climate change and school shootings; their best years spent online, trapped at home during a global pandemic.

This message is also what makes “Coma” surpass the trappings of a lockdown movie: It may be anchored to that period, but it speaks to an existential crisis that defines many right now.

Coma
Not rated. Running time: 1 hour 22 minutes. In theaters.