RESUMO
This paper discusses the theoretical basis of traditional Chinese medicine （TCM） for the treatment of cancer-related fatigue （CRF） based on the principle of treating overstrain with warming in the Huangdi's Internal Classic 《黄帝内经》 and the role of hypothalamic-pituitary-adrenal （HPA） axis dysregulation in CRF， aiming to provide new ideas for the clinical treatment of CRF. In the pulsatile regulation of the HPA axis， cortisol， which is synthesized and released by the adrenal cortex， plays an essential role in the life activities. The abnormal circadian rhythm and reduced serum level of cortisol are major factors leading to CRF. Therefore， increasing the serum level and stimulating the biological activity of cortisol and restoring the normal function of HPA axis are important targets for the treatment of CRF and also the key to the TCM treatment of this disease. According to the TCM principle of treating overstrain with warming， we interpreted the etiology and clinical manifestations of overstrain and further explored the causes of CRF. It is believed that the depletion of Qi and blood， Yin and Yang， and fluid in the kidney， spleen， and liver is the key of the disease， which results in symptoms such as fatigue. Further， we elaborated on the theoretical connotation of warming and summarized the two main treatment principles of tonifying with warm-natured herbs and relieving fever with sweet- and warm-natured herbs. According to the different characteristics of the organs affected by pathogen， we proposed the treatment method of warming kidney to cultivate essence， warming stomach and nourishing spleen to replenish Qi， nourishing liver and tonifying blood to promote Qi movement， and relieving fever with sweet- and warm-natured herbs to alleviate fatigue. The warming method can elevate the serum level and invigorate the biological functions of cortisol in CRF patients， which provides a new theoretical basis for alleviating the symptoms and improving the quality of life of cancer patients in clinical practice.