Nightmare

In The Sims 2, Sims can have nightmares if players haven't been taking care of them. They will have nightmares if, they go to sleep when they are hungry, have to go to the bathroom, or are dirty, etc. They also have a much higher chance if they passed out from exhaustion and the player made them wake up and go to bed. They can also have nightmares if they are in an aspiration desperation or are in the red. For example, if your sim just witnessed a death or had a miscarraige, they will more than likely have a nightmare.