疲憊是一種主觀感受缺乏能量的狀況，除癌症及慢性病人常表現的症狀外，健康人也會有疲憊的經驗，癌因性疲憊已被列入ICD診斷項目中，它是一個全球普遍性的問題。醫護人員應具備疲憊的知識背景，包括疲憊的定義及特徵、測量工具的品質、疲憊的診斷及護理，選擇適合的量表早期評估，鑑別其嚴重度，並提供護理介入，透過健康管理，協助個案改善疲憊狀況。

Fatigue implies a subjectively perceived status lacking energy, in addition to common symptoms manifested in cancer and chronic disease patients, fatigue may also be experienced by healthy people. Cancer-related fatigue has been included in diagnostic items for the International Classification of Diseases (ICD), which is a general problem worldwide. Medical personnel shall acquire background knowledge on fatigue such as definition and characteristics of fatigue, quality of measuring tools, as well as diagnosis and nursing for fatigue, choosing appropriate scales for early assessment, determining the severity and providing nursing intervention to assist the cases in improving fatigue status through health management.