Fatigue/Lack of Endurance: Common Side Effect.

For fatigue/lack of endurance, standards of care are based on established evidence-based practice. Fatigue is a distressing, persistent, and subjective sense of tiredness or exhaustion that is not proportional to the activity and interferes with usual function. Lack of endurance refers to limited physical capability to sustain an exercise or activity for an extended period of time. From 80% to 100% of patients with cancer report experiencing fatigue. It can be isolated or occur within a symptom cluster with pain, depression, dyspnea, anorexia, and sleep disturbance.