[Characteristics of Clinical Ethical Issues in Neurodegenerative Diseases and Shared Decision Making].

In neurological care, ethical issues often arise because of cognitive decline and prognostic uncertainty. These conflicts typically stem from competing values among the four principles of biomedical ethics. To address these issues, practicing shared decision-making (SDM)-which respects the patient's subjective quality of life (QOL) and personal values-is essential. Clinicians must recognize the ambiguity of "life-sustaining treatment" in this context and avoid hasty conclusions. Instead, they should strive to achieve the best possible consensus through continuous dialogue.