Refusal of treatment and decision-making capacity.

This article explores refusal of medical treatment by adult patients from ethical and legal perspectives. Initially, consequentialist and deontological ethical theory are outlined. The concepts of autonomy, paternalism and competence are described and an overview of Beauchamp and Childress's principle-based approach to moral reasoning is given. Relevant common law is discussed and the provisions of the Mental Capacity Act 2005 in assessing competence is evaluated. In order to demonstrate the consideration of moral issues in clinical practice, ethical theory is applied to two well-known incidents: the case of Re MB, where doubt over decision-making capacity led to a paternalistic act to override a patient's choice; and the death of Emma Gough, a situation where respect for autonomy prevailed when healthcare staff acted lawfully in following a patient's refusal of life-saving treatment. Finally, guidance from regulatory bodies on the roles and responsibilities of health professionals in relation to this topic are considered.