Conroy, Karl, Bhatia, Shaun, Islam, Mohammed et al. · Healthcare (Basel, Switzerland) · 2021 · DOI
This study looked at over 2,100 people with ME/CFS to understand different levels of severity, focusing on those who are homebound (unable to leave home) and bedridden (unable to leave bed). The researchers found that people who are bedridden experience post-exertional malaise (PEM)—a worsening of symptoms after physical or mental activity—differently or more severely than those who are only homebound. This research helps doctors and patients better understand how severe ME/CFS can become.
Understanding distinctions between homebound and bedridden ME/CFS is crucial for clinicians to accurately assess severity, prognosis, and appropriate management strategies. For patients and advocates, this research provides evidence-based characterization of severe ME/CFS, supporting recognition of the condition's profound impact and potentially influencing disability determinations, resource allocation, and treatment prioritization.
This study does not prove what causes PEM differences between groups or establish causality of any kind. It cannot determine whether bedridden status causes more severe PEM or vice versa, nor does it explain the biological mechanisms underlying these associations. The cross-sectional design also means we cannot know how people progress from homebound to bedridden status over time.
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
Conroy, Karl, Bhatia, Shaun, Islam, Mohammed, & Jason, Leonard A (2021). Homebound versus Bedridden Status among Those with Myalgic Encephalomyelitis/Chronic Fatigue Syndrome.. Healthcare (Basel, Switzerland). https://doi.org/10.3390/healthcare9020106
BibTeX
@article{mecfsatlas-conroy-2021-homebound-versus,
author = {Conroy, Karl and Bhatia, Shaun and Islam, Mohammed and Jason, Leonard A},
title = {Homebound versus Bedridden Status among Those with Myalgic Encephalomyelitis/Chronic Fatigue Syndrome.},
journal = {Healthcare (Basel, Switzerland)},
year = {2021},
doi = {10.3390/healthcare9020106},
note = {PubMed: 33498489},
url = {https://www.mecfsatlas.com/evidence/conroy-2021-homebound-versus},
}Atlas snapshot reference
ME/CFS Atlas. Generator v1 / Scanner v1.4 / policy v0.1. Accessed 2026-05-26. https://www.mecfsatlas.com/evidence/conroy-2021-homebound-versus
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