Case Lab · Type F · Boundary

F23

Sorting the evidence — fast onset, shifting picture

Simone, 29, was well until four days ago, shortly after being unexpectedly evicted from her apartment. Since then she has expressed a rapidly changing set of beliefs — first that her landlord was part of a wider conspiracy, then that she has been chosen for a special task — alongside brief episodes of hearing her name called. Her mood swings between terror and elation within hours. She is disoriented about what is happening. There is no history of similar episodes, no substance use, and no medical illness.

For each statement, choose the reasoning role it plays.

0 of 6 evidence statements classified

Onset developed over roughly two days, following a clear acute stressor (eviction). Missing and necessary to ask Supports the target category Contradicts or weakens Raises an alternative Consistent, but not decisive

Delusional content and mood are shifting rapidly from hour to hour and day to day. Missing and necessary to ask Contradicts or weakens Raises an alternative Consistent, but not decisive Supports the target category

Only four days have elapsed since onset. Raises an alternative Contradicts or weakens Missing and necessary to ask Consistent, but not decisive Supports the target category

No history of similar episodes, no substance use, no medical illness. Raises an alternative Supports the target category Missing and necessary to ask Contradicts or weakens Consistent, but not decisive

Whether the presentation resolves within the next few weeks, as F23 would predict. Contradicts or weakens Supports the target category Raises an alternative Missing and necessary to ask Consistent, but not decisive

Simone is bewildered and disoriented about what is happening to her. Raises an alternative Consistent, but not decisive Missing and necessary to ask Supports the target category Contradicts or weakens