Influence of Psychiatric Symptoms on Decisional Capacity in Treatment Refusal.

How psychiatric symptoms affect patients' decision making in practice can inform how we think-theoretically and conceptually-about what it means for those patients to have decision-making capacity. Assessment of a patient's decisional capacity allows those with adequate capacity to make choices regarding treatment and protects those who lack capacity from potential harm caused by impaired decision making. In analyzing a case in which a patient with stage II breast cancer refuses further treatment, we review the conceptual model of informed consent and approaches to assessing decision-making capacity that are in accordance with the American Medical Association Code of Medical Ethics as well as tools to assess decisional capacity.