Hataya, Yuji, Okubo, Marie, Hakata, Takuro et al. · BMC endocrine disorders · 2022 · DOI
Researchers used a special hormone test (CRH challenge test) to study a group of young women with chronic fatigue who had unusual patterns in their stress hormone system. They found that these patients had a mild form of adrenal insufficiency—their bodies weren't producing quite enough cortisol—but giving them cortisol supplements only helped some of them feel less fatigued. This suggests that their fatigue might involve more than just low cortisol levels.
This study provides neuroendocrine evidence that ME/CFS patients have measurable HPA axis dysfunction detectable by specialized testing, validating patient experiences of fatigue as having a biological basis. The finding that cortisol supplementation doesn't universally improve fatigue suggests researchers should investigate other mechanisms beyond simple hormone deficiency, potentially opening new treatment pathways.
This study does not establish that HPA axis dysfunction causes ME/CFS, only that it is present in some patients with chronic fatigue. It does not prove that all ME/CFS patients have hypothalamic disorders, nor does it demonstrate why cortisol supplementation fails in certain patients. The retrospective design and lack of formal ME/CFS diagnostic criteria limit generalizability to the broader ME/CFS population.
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
Hataya, Yuji, Okubo, Marie, Hakata, Takuro, Fujimoto, Kanta, Iwakura, Toshio, & Matsuoka, Naoki (2022). Clinical characteristics of patients with unexplainable hypothalamic disorder diagnosed by the corticotropin-releasing hormone challenge test: a retrospective study.. BMC endocrine disorders. https://doi.org/10.1186/s12902-022-01237-7
BibTeX
@article{mecfsatlas-hataya-2022-clinical-characteristics,
author = {Hataya, Yuji and Okubo, Marie and Hakata, Takuro and Fujimoto, Kanta and Iwakura, Toshio and Matsuoka, Naoki},
title = {Clinical characteristics of patients with unexplainable hypothalamic disorder diagnosed by the corticotropin-releasing hormone challenge test: a retrospective study.},
journal = {BMC endocrine disorders},
year = {2022},
doi = {10.1186/s12902-022-01237-7},
note = {PubMed: 36494805},
url = {https://www.mecfsatlas.com/evidence/hataya-2022-clinical-characteristics},
}Atlas snapshot reference
ME/CFS Atlas. Generator v1 / Scanner v1.4 / policy v0.1. Accessed 2026-05-27. https://www.mecfsatlas.com/evidence/hataya-2022-clinical-characteristics
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