I completely agree, @RedToothBrush .
I’m sorry for what your family went through, @Notgreatreally . But as Red says, what you need it a Content Warning, not a Trigger Warning.
Trigger warnings tell the viewer/listener/reader that here is something that will rightly be distressing for them. It’s reductive, what actual “triggers” someone with trauma can be something totally unexpected (like Hadley’s example of water retention).
It sets up the expectation of a negative emotional reaction, and that a sensitive person would feel that way. Priming the pump as Red so eloquently says.
A content warning lists any issues contained within, and makes no value judgments not inferences as to how an audience would react.
”Scenes of sexual violence” is not triggering for me (fortunately) but I choose not to watch things containing them. Content warnings are useful, Trigger warnings are manipulative.