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Chronic fatigue syndrome (CFS) or myalgic encephalomyelitis (ME) is a debilitating disorder, affecting at least 250 000 people in the UK. Marked by debilitating fatigue, its aetiology is poorly understood and diagnosis controversial. A number of symptoms overlap with other illnesses with the result that CFS/ME is commonly misdiagnosed. It is important therefore that significant clinical features are investigated. People diagnosed with CFS/ME consistently report that they experience vision-related symptoms associated with their illness1–⇓3 and some of these reports are being verified experimentally.4 Although vision-related symptoms may represent a significant clinical feature of CFS/ME that could be useful in its diagnosis, they have yet to be included in clinical guidelines.
A recently developed, standardised measure designed to assess core CFS/ME symptoms, The DePaul Symptom Questionnaire (DSQ),5 includes four vision-related items: eye pain, …
Contributors CVH analysed the data and wrote the letter. JM analysed the data. SPB recruited the participants and collected the data. LAJ developed the DSQ.
Competing interests None.
Ethics approval National Research Ethics Service and School of Psychology, University of Leicester Ethics Committee.
Provenance and peer review Not commissioned; externally peer reviewed.