A 22-year-old man is brought to ED by police due to concerning behaviour. There is no personal or family psychiatric history and you suspect acute psychosis.

1. Other than medications or drugs, list four medical causes of acute psychosis. 4 marks

2. List five features on history or mental state examination that make a primary psychiatric illness more likely than an organic cause. 5 marks

After assessment, you have informed the patient that he is to be admitted for psychiatric care. The patient states he wishes to leave.

3. State three general criteria that must be met before mental health legislation can be used to detain a patient. 3 marks