Research findings suggest that nursing assessment and care and psychotherapy of forensic patients with personality disorder should be based on a holistic approach that addresses a wide range of their needs. Such an approach should be in collaboration with patients, informal carers, and other professionals and informed by appropriate education, training, clinical supervision, and support. Holistic care includes areas (such as physical health, cultural, spiritual, and psychosexual needs) that are addressed to a limited extent in the literature on patients with personality disorder. Despite limitations in research evidence, findings suggest that some patients with personality disorder benefit from psychotherapies, sometimes facilitated by nurse-therapists, and therapeutic community principles. These interventions should take account of patients’ cultural and spiritual needs and perspectives. Helping patients to manage anger has potentially positive consequences for their physical health, personal and work relationships, and other areas. Research is needed to consider how to deliver holistic care with limited resources and in organizations, such as prisons, with conflicting goals.