Gupta, Ravi, Kundu, Kaustuv, Khayyam, Khwaja et al. · Indian journal of psychiatry · 2020 · DOI
This case report describes a patient who was initially diagnosed with depression and wasn't getting better with antidepressant medications. Doctors later realized he actually had a sleep disorder called periodic limb movement disorder (PLMD), where the legs move involuntarily during sleep. When treated with a medication called ropinirole, his symptoms improved significantly. This story highlights how sleep problems can look like depression or chronic fatigue, and getting the right diagnosis matters.
This case is relevant because many ME/CFS patients experience significant sleep disturbances and daytime symptoms that can be confused with psychiatric conditions or other chronic illnesses. It highlights that sleep disorders warrant objective evaluation through polysomnography, as the underlying cause may differ from initial clinical impressions and proper diagnosis can lead to effective targeted treatment.
This single case report cannot establish how common periodic limb movement disorder is among ME/CFS patients, nor can it prove that PLMD is a primary cause of ME/CFS rather than a comorbid condition. The case does not establish causation or prevalence, only that diagnostic confusion is possible and that sleep studies may be warranted in select patients with prominent sleep disturbance.
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
Gupta, Ravi, Kundu, Kaustuv, Khayyam, Khwaja, & Saini, Lokesh Kumar (2020). Not what it seems to be: Depression versus periodic limb movement disorder.. Indian journal of psychiatry. https://doi.org/10.4103/psychiatry.IndianJPsychiatry_450_19
BibTeX
@article{mecfsatlas-gupta-2020-what-seems,
author = {Gupta, Ravi and Kundu, Kaustuv and Khayyam, Khwaja and Saini, Lokesh Kumar},
title = {Not what it seems to be: Depression versus periodic limb movement disorder.},
journal = {Indian journal of psychiatry},
year = {2020},
doi = {10.4103/psychiatry.IndianJPsychiatry_450_19},
note = {PubMed: 33165358},
url = {https://www.mecfsatlas.com/evidence/gupta-2020-what-seems},
}Atlas snapshot reference
ME/CFS Atlas. Generator v1 / Scanner v1.4 / policy v0.1. Accessed 2026-05-30. https://www.mecfsatlas.com/evidence/gupta-2020-what-seems
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