Self-harm is a widespread behaviour among people with mental health problems. Although guidance on how to manage self-harm is offered, it is still a behaviour that is misunderstood by many nurses. Such misunderstanding is generally attributed to the perceived motives for self-harm and lack of specialized education to manage the behaviour. As a consequence, the care provided is usually inadequate and inappropriate. Yet, research concerning nurses' reasons of users' self-harming behaviours is limited.