Human case
Cold, Flu, or Something Else?
Several people in one home feel tired, headachy, and off in a way that first sounds like an ordinary seasonal illness. The pattern is not quite clean, though, and the details matter. In this starter DxDetective case, players work from the viewpoint of a caregiver who has to gather useful observations without jumping straight to a dramatic conclusion. The round asks what to check first, which clues are worth the time, and when the safest next action changes because more than one person is affected. The public case page can discuss the home setting, the number of rounds, the kinds of diagnostic choices, and the difficulty level without naming the hidden cause. The lesson is about pattern recognition, triage, and choosing practical next steps when a household story does not fit the first explanation.