A 28-year-old woman with a known history of schizophrenia is brought to the ED by police after being found wandering and agitated in public. She is disoriented and responding to internal stimuli.

1. List (4) clinical features or findings that would prompt you to consider an underlying medical cause for her presentation. 4 marks

2. Define the term "medical clearance" in the context of a psychiatric patient in the Emergency Department. 2 marks

3. List (4) specific investigations you would perform as part of her medical clearance and provide rationale for each. 4 marks

4. List (2) key criteria that must be met before this patient can be considered medically cleared for psychiatric assessment. 2 marks