“The label ‘Chronic Fatigue Syndrome’ was first proposed by Holmes et al. (1988) of the Centers for Disease Control (CDC). This name was recommended to replace that of a number of terms that implied a causal pathology (e.g. ‘Myalgic Encephalomyelitis’, ‘Post-Viral Fatigue Syndrome’ and ‘chronic Epstein-Barr virus syndrome’), as there was a lack of correlation between biological markers and symptomatology. Hence, this new label reflected the prime clinical characteristic of the condition without alluding to an underlying physical aetiology and, in turn, the definition was based upon signs and symptoms of the patient group. However, many individuals use the term Myalgic Encephalomyelitis (indicating muscle pain and inflammation of the brain), a fact that is reflected by the titles of the two largest charitable organisations in the UK, the ME Association and Action for ME.”