Tiredness: Information for patients and carers

Fatigue is one of the most common and distressing symptoms for people living with a serious illness. 

What Is Fatigue?

Fatigue is a feeling of extreme tiredness or lack of energy that doesn’t always go away with rest. It can be physical, mental, or emotional. People often describe it as feeling drained, heavy, or like their body won’t do what they want it to.

Fatigue can affect:

  • The ability to move around or do daily tasks
  • Concentration and memory
  • Mood and motivation
  • Social interaction
Why Does Fatigue Happen?
  • The illness itself (e.g. cancer, heart failure, lung disease)
  • Side effects of treatments like chemotherapy or medication
  • Pain or other symptoms interfering with sleep
  • Anxiety or depression
  • Poor nutrition or dehydration
  • Moving about less

Fatigue often has more than one cause.

When to seek medical advice
  • If you feel low, anxious, or unable to cope with the change in energy levels
  • If fatigue is new or has changed significantly as there may be a treatable medical cause such as low blood count (anaemia), infection, or medication side effects
  • There are some medications (such as steroids) that may help with a boost of energy for a short period of time

What Can Help?

While fatigue can be difficult to eliminate completely, there are ways to manage it:

Ways to cope with low energy levels
  • Prioritise: Focus on what matters most each day
  • Plan ahead: Spread tasks throughout the day or week
  • Pace yourself: Take regular breaks and rest when needed
Physical activity

Gentle movement or light exercise (such as walking or stretching) can surprisingly help maintain energy and reduce fatigue.

Sleep and rest
  • Try to keep a regular calm sleep routine
  • Limit naps to short periods during the day
Nutrition and hydration
  • Eat small, regular meals
  • Drink plenty of fluids
Emotional support

Talk to someone you trust about how you're feeling. Counselling or support groups can help if you’re struggling emotionally.

The Macmillan leaflet - Coping with fatigue (tiredness) has more comprehensive information - please see downloads

Recommended Resources

Macmillan - Coping with fatigue

Published 1st July 2023

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