The weirdness of having a bunch of other minds like yours in the room: the lived experiences of mentalisation-based therapy for borderline personality disorder

Objectives: Studies of lived experiences are important for improving treatment effectiveness, but most studies of mentalisation-based therapy (MBT) are quantitative. This qualitative study aimed to better understand service users’ lived experiences of MBT, including their experiences of change. Design: This is a qualitative study that used one-to-one semi-structured interviews. Method: Semi-structured interviews were conducted with eight MBT service users recruited via four NHS trusts. Interviews were analysed using interpretative phenomenological analysis (IPA). Results: Three superordinate themes were identified: being borderline, being in the group, and being on a journey. ‘Experiences of diagnosis’ and ‘the group’ are salient topics in the lived experiences of service users’ during the MBT journey, as is the nature/type of ‘change’ which can create symptom reduction albeit alongside a negative felt experience. Conclusion: Our research aligns with current thought regarding the complexity and challenges of treating BPD via psychotherapy and adds a further dimension, that of experiencing MBT and changes during therapy. The participants’ experiences of BPD, and of experiencing MBT are discussed.