Differences in ME and CFS Symptomology in Patients with Normal and Abnormal Exercise Test Results

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By Stephanie L McManimen and Leonard A Jason

Abstract

Post-exertional malaise (PEM) is a cardinal symptom of myalgic encephalomyelitis (ME) and chronic fatigue syndrome (CFS), which often distinguishes patients with this illness from healthy controls or individuals with exclusionary illnesses such as depression. However, occurrence rates for PEM fluctuate from subject to how the symptom is operationalized. One commonly utilized method is exercise testing, maximal or submaximal. Many patients with ME and CFS experience PEM after participating in these tests, and often show abnormal results. However, some patients still exhibit normal results after participating in the exercise testing. This study examined the differences between two patient groups with ME and CFS, those with normal results and those with abnormal results, on several PEM-related symptoms and illness characteristics. The results suggest those that displayed abnormal results following testing have more frequent and severe PEM, worse overall functioning, and are more likely to be bedbound than those that displayed normal results

Source: Stephanie L McManimen and Leonard A Jason. Differences in ME and CFS Symptomology in Patients with Normal and Abnormal Exercise Test Results.
Int J Neurol Neurother, IJNN-4-066, (Volume 4, Issue 1), Research Article; ISSN: 2378-3001 DOI: 10.23937/2378-3001/1410066 (Full article)

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