How is persistent fatigue treated?

Cancer, its treatment, anaemia, infection, pain, sleep disruption, low mood, dehydration, and poor nutrition can all contribute to exhaustion. Blood tests and a review of medicines, sleep, appetite, mood, and activity can help find factors that can be treated. Some blood disorders, including myelodysplastic syndromes and myeloproliferative neoplasms, may also cause marked tiredness.

A plan may include gentle activity with planned rests, occupational or cancer rehabilitation, nutrition support, sleep strategies, and treatment for pain, anxiety, depression, or anaemia. Blood transfusion support may be considered when clinically appropriate. Palliative care can help with energy, comfort, and daily goals at any stage.

Tell your care team how fatigue affects walking, bathing, work, concentration, and sleep. Keep a simple activity and rest diary so the team can spot patterns. Prioritise essential tasks, sit for activities when possible, accept practical help, and use short periods of gentle movement if safe.

Seek advice before taking iron, vitamins, stimulants, or herbal products. The right treatment depends on the cause, and supplements can interact with cancer medicines or be unhelpful when levels are normal.

Contact your treatment team promptly if fatigue suddenly worsens or comes with fever, breathlessness, chest pain, dizziness, confusion, palpitations, bleeding, or inability to stay awake. These symptoms can signal anaemia, infection, dehydration, or another problem needing timely assessment.

Ask: Could anaemia, infection, pain, sleep, mood, or medicines be contributing? Which tests are needed? What activity level is safe? Would rehabilitation, counselling, transfusion support, or palliative care help? When should I call urgently?