Psychiatrycommon
A 24-year-old woman with borderline personality disorder has cut her forearms after arguments about once a fortnight for two years, and has attended the emergency department eleven times in the past year. She has no depressive or psychotic illness and drinks little. She lives with her mother, works part-time, and says she will attend a weekly programme for as long as it takes. Her general practitioner asks which therapy to seek funding for. Which one of the following has the strongest evidence for reducing her deliberate self-harm?