A character in the process of or after experiencing some “traumatic” event (ex: betrayal, seeing death, etc.) that would cause that character to experience ptsd if reminded of the experience in the future.
A possible indication of a character being traumatized is an expression of shock with empty eyes (though it is not limited to such features).
A picture tagged with this tag should show/imply the cause of the trauma and that the character has a negative reaction towards whatever event is the cause.