Treating taboo thoughts on a psychiatric intensive care unit: a four-phase mixed methods single case experimental design.

Background: Well-designed evaluations of psychological interventions on psychiatric intensive care units (PICUs) are a rarity.

Aims: To evaluate the effectiveness of cognitive behaviour therapy for intrusive taboo thoughts with a patient diagnosed with bipolar affective disorder admitted to a PICU due to significant ongoing risk of harm to self.

Method: This was a four-phase ABC plus community follow-up (D) mixed methods =1 single case experimental design.