Cripe, Jada, Ravichandran, Suvetha, Deditz, Samantha et al. · The patient · 2026 · DOI
Researchers reviewed 190 published studies to map out which measurement tools are most commonly used to assess how severe ME/CFS is and how much it impacts patients' daily lives. The most frequently used tools were general health surveys (SF-36 and Sickness Impact Profile) and some disease-specific questionnaires, but the review found that these tools do not consistently measure the same things, and many fail to capture the core experience of post-exertional malaise. The authors conclude that a standardized, ME/CFS-specific measurement approach is needed, though this scoping review does not itself test or validate any new measurement tool.
ME/CFS patients and researchers have long lacked consensus on how to measure and compare illness severity across studies, making it difficult to track disease progression, compare treatment outcomes, or coordinate global research efforts. This review documents that fragmentation: most studies use generic tools that miss PEM and other core ME/CFS features, hampering the ability to detect clinically meaningful change. Establishing standardized, disease-specific measurement frameworks is essential for future clinical trials, epidemiological research, and real-world monitoring of patient outcomes.
This scoping review does not validate or recommend any single measurement instrument; it documents the heterogeneity of current practice. It does not test whether standardizing measurement would improve clinical outcomes or research quality. It does not establish which specific measures are most sensitive to disease progression or treatment response in ME/CFS.
About the PEM badge: “PEM required” means post-exertional malaise was an explicit required diagnostic criterion for participant inclusion in this study — not that PEM was studied, observed, or discussed. Studies using criteria that do not require PEM (e.g. Fukuda, Oxford) are tagged “PEM not required”. How the atlas works →
The first block is for the primary paper and is the citation you should use in research work. The atlas-snapshot line only applies if you are specifically referring to this atlas’s reading of the paper on the date shown.
Primary citation
Cripe, Jada, Ravichandran, Suvetha, Deditz, Samantha, & Jason, Leonard A (2026). Measures of Overall Illness Severity and Burden for ME/CFS: A Scoping Review.. The patient. https://doi.org/10.1007/s40271-026-00849-8
BibTeX
@article{mecfsatlas-cripe-2026-measures-overall,
author = {Cripe, Jada and Ravichandran, Suvetha and Deditz, Samantha and Jason, Leonard A},
title = {Measures of Overall Illness Severity and Burden for ME/CFS: A Scoping Review.},
journal = {The patient},
year = {2026},
doi = {10.1007/s40271-026-00849-8},
note = {PubMed: 42879116},
url = {https://www.mecfsatlas.com/evidence/cripe-2026-measures-overall},
}Atlas snapshot reference
ME/CFS Atlas. Generator v1 / Scanner v1.4 / policy v0.1. Accessed 2026-10-16. https://www.mecfsatlas.com/evidence/cripe-2026-measures-overall
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