Resumen:
Cancer-related fatigue (CRF) can be defined as a persistent, subjective sense of tiredness related to cancer and cancer treatment that interferes with usual functioning. CRF is not relieved by rest. CRF is the most common symptom in our patients and it has traditionally been underdocumented, underdiagnosed and undertreated. If we integre questionnaires about symptoms in routine practice, it would help us to improve communication and implement the quality of life of our patients and their families.