Assignment task: A teacher (Flore), aged 29, went with a group of her friends to visit a new city. To manage costs, the friends shared a hotel room.
Three or four days into their trip, the friends began to notice a change in Flore. They reported that she seemed to become increasingly anxious and talked about others "watching" her. On the fourth night, she became even more delusional, refused to get ready for bed, and spent her time in the hotel room checking closets and looking under beds for people she believed were hid there to watch over her. Her friends became very worried and took her to a nearby hospital. Hospital staff examined her, provided her with medication to help her calm down, and asked her friends to take her back to the hotel.
Name the disorder illustrated in this case.