When to worry about persistent fatigue with anxiety and low mood during cancer

Worry, low mood, poor sleep, pain, reduced activity, medicines, infection, and treatment can each drain energy. Fatigue can also make it harder to cope emotionally, creating a difficult cycle. A clinician can consider both mental health and physical causes rather than assuming one explains everything.

Tell your oncology team whether fatigue is affecting washing, eating, work, treatment visits, or contact with other people. Ask about psycho-oncology, counselling, practical support, sleep help, and a medication review. Choose small manageable tasks, keep a regular sleep routine, and let someone you trust know when your energy or mood changes.

Contact your team promptly if fatigue is worsening, you cannot manage essential activities, or low mood is accompanied by hopelessness, severe anxiety, or inability to sleep. Seek emergency help immediately if you may harm yourself, feel unable to stay safe, become confused, or develop severe physical symptoms such as chest pain or breathing difficulty.

Could a physical problem or medicine be worsening my fatigue? What emotional support is available? How can I make a safety plan for difficult days, and who should I contact outside clinic hours?