Seeing as it’s just a movie so maybe they’re just being more dynamic.

I spent 3 years among real psychics. TV does not depict them well. TV misses the point.

It's a plot device: a sign of activity, of struggle. They can't sh*t their pants, or wet themselves, that would be weird.

I had an acquaintance who got a nosebleed and died the same day

Great point! By the time blood comes out the nose, the brain has to be mush! I’m also bothered by how easily people in movies and tv are knocked unconscious. Boxers give each other beatings and keep going, but Joe Schmo bonks his head on an open cabinet door and he’s out cold.

there are capillaries in the nasal cavity that are setups for rupture.Now blood coming out of your ears is sign of a basilar skull fracture. Frogs or toads can squirt blood out of their eyes . I havent pondered the meaning of that or tried it myself

There is nothing real about any of it. (IMHO)

It's just a silly movie trope, same as the one where someone on foot being followed by a car will invariably walk down the middle of the road, crime fighters chase criminals into dark warehouses in the middle of the night alone, without telling anyone, and usually leave their cell phones in the car, etc.

I love doing reverse engineering on fantastical concepts. A rapid increase in blood flow to the brain, resulting in burst capillaries in the nasal passage?