How big is the problem?
| Estimate | |
|---|---|
| Worldwide | Around 17–24 million people had ME/CFS before COVID-19. Long COVID has added substantially to that. |
| United States | 836,000 to 2.5 million people (Institute of Medicine, 2015), with newer estimates higher since COVID |
| Australia | Estimated at up to 250,000 people before COVID-19 |
| Undiagnosed | The Institute of Medicine estimated 84–91% of people with ME/CFS had not been diagnosed |
These numbers are estimates. ME/CFS is under-diagnosed, and counting it depends on which diagnostic criteria are used.
Quality of life
Studies that measure quality of life have found people with ME/CFS score lower than people with many other serious chronic illnesses, including multiple sclerosis, rheumatoid arthritis, heart failure, kidney disease and some cancers. The biggest hits are to physical function, energy and the ability to carry out usual roles.
Everyday impact
Daily life
Showering, cooking, shopping or a phone call can each take a whole day’s energy. Many people have to choose between a shower and a conversation.
Work & study
Many people with ME/CFS can’t work full time, and many can’t work at all. Young people often miss large amounts of school or university.
Relationships
Social life shrinks to protect energy. Because people can look well, friends and family may not believe how sick they are.
Money
Lost income and out-of-pocket costs for tests, supplements, allied health and aids add up, often while applying for support is itself exhausting.
The impact of disbelief
For decades, many people with ME/CFS were told their illness was psychological, or that they needed to exercise more. Many still are. This has real consequences:
- Delayed diagnosis: years of uncertainty, often while unknowingly making the illness worse
- Harmful advice: graded exercise therapy, now recognised as harmful, was standard for decades
- Isolation: not being believed by doctors, employers or family
- Mental health strain: the grief and isolation of a serious illness that others dismiss
Things are changing. Major health bodies, including the US CDC, the UK’s NICE (2021) and Australia’s NHMRC, have moved away from exercise-based treatment. New Australian clinical guidelines are being developed.
Severe ME/CFS
People with severe and very severe ME/CFS are often invisible because they can’t leave home to be seen. They may:
- be bedbound in a dark, quiet room
- be unable to tolerate light, sound, touch or conversation
- need help with eating, washing and toileting
- have trouble swallowing or need tube feeding
Care for people with severe ME/CFS has to be adapted: shorter visits, reduced sensory load, and home-based care where possible.
Impact on carers and families
Families often take on a large amount of care, admin and advocacy. That takes its own toll. The page For family & carers covers how to help without burning out.
Why early recognition matters
The best window to stop a decline is early, while the illness is still mild. Recognising ME/CFS early and pacing from the start gives the best chance of stabilising or improving.