The information below has been taken from the comprehensive: ME/CFS/PVFS An Exploration of Key Clinical Issues (2017).
This is an up-to-date, 136-page, A4-sized, fully referenced guide to all aspects of the disease and is now in its ninth edition. It features all relevant published research on M.E. and contains far more information that we could possibly include on our website.
Written by Dr Charles Shepherd, Hon. Medical Adviser to the ME Association, and Dr Abhijit Chaudhuri, Consultant Neurologist, Essex Centre for Neurosciences, Clinical Issues is reviewed and revised on an annual basis.
You can purchase a copy from our online shop or by contacting head office on 01280 818964 (Monday-Friday, 9.30am to 3.00pm).
Free copy available for medical professionals!
We have funds set aside in our medical education budget to provide free copies of this guide to your GP or other medical professional. Just let us have their details and we will take care of the rest. Either phone head office on the number above or email: firstname.lastname@example.org
Prognosis (Outlook) and quality of life
Part 1: What are the chances of recovering from ME/CFS?
Part 2: Research into prognosis
Part 3: Quality of life
Part 4: Age and illness duration
What are the chances of recovering from ME/CFS?
Most people with ME/CFS fall into one of four broad groups:
- Those who manage to return to normal health, or near normal health, even though this may take a considerable period of time.
- The majority who make some degree of improvement but eventually tend to stabilise. They then follow a fluctuating pattern with both good and bad periods of health. Relapses or exacerbations are often precipitated by infections, operations, temperature extremes or stressful events.
- A significant minority of patients remain severely affected and may require a great deal of practical and social support.
- Continued deterioration is unusual in ME/CFS. When this occurs, a detailed medical re-assessment is advisable to rule out other possible diagnoses.
Research into prognosis
Several research studies looking at prognosis in ME/CFS have now been published (e.g. Bombardier and Buchwald 1995; Hinds et al 1993; Sharpe et al 1992; Vercoulen et al 1996b; Wilson et al 1994).
- Results from these studies indicate that ME/CFS often becomes a chronic and very disabling illness with complete recovery only occurring in a small minority of cases.
- A systematic review of 14 studies (Cairns and Hotopf 2005) found a median full recovery rate during the follow-up periods of 5%, and the median proportion of patients who improved during follow-up was 39.5%.
The report to the Chief Medical Officer (2002; in section 1.4.3) noted that:
|‘Prognosis is extremely variable. Although many patients have a fluctuating course with some setbacks, most will improve to some degree. However, health and functioning rarely return completely to the individual’s previous healthy levels; most of those who feel recovered stabilise at a lower level of functioning than before the illness….’
‘Overall, there is wide variation in the duration of illness with some people recovering in less than two years while others remain ill after several decades. Those who have been affected for several years seem less likely to recover; full recovery after symptoms persist for more than five years is rare.’
Additional help from the ME Association:
> We have produced an information leaflet on prognosis and permanency that can be used in conjunction with benefits, insurance and pension assessments, and also published a blog in July 2017 that might be useful.
Quality of life
Studies that have examined functional status and quality of life measures (Buchwald et al 1996; Hvidberg et al 2015; Komaroff et al 1996; Nacul et al 2011a; Schweitzer et al 1995; Winger et al 2015 – in adolescents) also confirm that the scale of impairment across a range of physical and mental activities can be just as great or greater than in many other chronic medical conditions.
One study, from Nacul et al (2011a) in the UK, reported that:
|“ME/CFS is as disabling and has a greater impact on functional status and well-being than other chronic diseases such as cancer. The emotional burden of ME/CFS is felt by lay carers as well as by people with ME/CFS.”|
The high level of disability associated with ME/CFS often stems from a combination of symptoms such as fatigue, pain, orthostatic intolerance, sleep disturbance, cognitive impairment and, in some cases, an associated depression.
⇒ Another study, published in 2017, showed that people with ME or CFS were significantly more disabled in terms of functional ability while at the same time showing little difference in role emotional or mental health, compared to people with multiple sclerosis.
The authors commented:
“This suggests that with a great illness burden, and continuing skepticism about the legitimacy of ME and CFS, those with this illness tend to be functioning relatively well on mental health related indices.”
Age and illness duration
The extent to which patients’ age and illness duration might affect symptoms and functioning is uncertain.
In a recent collaborative study involving researchers from the UK, USA and Norway (Kidd et al 2016), participants were categorized into four groups based upon age (under or over age 55) and illness duration (more or less than 10 years).
The authors explained:
|‘The groups were compared on functioning and symptoms…. The results suggest that older patients with an illness duration of over 10 years have significantly higher levels of mental health functioning than the three other groups…. In addition, the younger patients with a longer illness duration displayed greater autonomic and immune symptoms in comparison to the older group with a longer illness duration.’|
The authors concluded that age and illness duration both should be taken into account when trying to understand the effects of these two variables on functioning and symptoms.
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