The oncologist
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Fatigue is one of the most common and debilitating symptoms experienced by patients with cancer. Cancer-related fatigue (CRF) is characterized by feelings of tiredness, weakness, and lack of energy, and is distinct from the "normal" drowsiness experienced by healthy individuals in that it is not relieved by rest or sleep. It occurs both as a consequence of the cancer itself and as a side effect of cancer treatment, although the precise underlying pathophysiology is largely unknown. ⋯ These effects can extend to caregivers and family members, who may also have to reduce their working capacity in order to provide additional care for a patient with CRF. This paper examines the prevalence of CRF and explores the impact of this distressing symptom on patients' functioning and QoL. Disclosure of potential conflicts of interest is found at the end of this article.