Usually associated with memories or dreams of negatives emotions and physical sensations, and could be classified as a phobia named Charpaphobia
The Carpechure Effect being where a scenario (usually fictional) is so intense and incomprehensible that it can give almost anyone aware of said scenario severe paranoia of it happening in reality, and even the slightest similarity to that fictional situation and the current state in reality could send said person with phobia into a panic attack.
Nobody wants to experience The Carpechure Effect.