
In a review paper published a few years ago, the consensus of the Royal Colleges of Physicians, Psychiatrists and General Practitioners in the UK was that "chronic fatigue is a biological syndrome which is not currently fully understood and does not require treatment with mood altering medications e.g antidepressants. This view has also been supported by the National Institute on Clinical Excellence (NICE).
Is it all in the mind? Up to 80% of all people with chronic fatigue have a history of classic allergies i.e. allergy to dust mites, pollens, moulds and others. This suggests that fatigue is caused by a disorder of the immune system. Many have a history of asthma, eczema or recurrent infections during their childhood. A multitude of symptoms seems to involve several systems of the body including the brain i.e. low mood, anxiety, poor concentration, brain-fog; digestion such as heartburn, abdominal pain, bloating, constipation or diarrhoea; aching muscles or joints, backaches, sprains, cramps; gynaecological i.e. heavy, painful, irregular cycles, menopausal symptoms and a host of others. Yet most hospital investigations or laboratory tests show no abnormality, thereby, enforcing the impression of a psychosomatic condition.
A consistent finding in people with chronic fatigue is the presence of features of dysfunction in the chemistry of their cells. During activity, lactic acid and pyruvic acid are produced by each cell; these are substances causing muscle cells to slow down until full recovery takes place when the cells dispose of these acids; in this way, cells recover fully and get ready for more action. Under normal circumstances, the full recovery occurs with rest or a good night's sleep; however, those affected with chronic fatigue show persistently increased levels of lactic acid and a prolonged delay to dispose of it; this finding might explain the continual tiredness even after brief physical or mental activity.
Since attending the Oxford Allergy Centre my life has been literally transformed. When I first attended the clinic I was allergic to virtually everything I ate, breathed and touched, was on an incredibly restricted diet, virtually emaciated and so ill I could barely move from the bed to the sofa.
The study of lactic acid in fatigued patients fits in well with the concept that chronic fatigue is not a psychosomatic condition, whereby the individual suffers with stress-related symptoms. This view is supported further with findings in several laboratory tests: (a) raised levels of extra-cellular DNA consistent with increased cell destruction, common in patients with degenerative diseases and cancer (b) reduced presence of oxygen in areas of the brain controlling the secretion and activity of vital hormones (c) the increased levels of some cell hormones (d) the misshapen appearance of red cells in electron microscopy (e) non-specific abnormalities in routine blood tests such as low white cell count or raised liver enzymes, to mention but a few.
Many patients have been fit, young people before the beginning of their disability and deny any stressful circumstances in their lives. Many have symptoms of impaired digestion.
In day-to-day practice, a number of these factors can be relevant. Partial or complete reversal of chronic fatigue is possible when such factors are identified and are brought under control.
Identifying the root cause.