In this post I link to Characterization of Post–exertional Malaise in Patients With Myalgic Encephalomyelitis/Chronic Fatigue Syndrome [PubMed Abstract] [Full-Text HTML] [Full-Text PDF]. Front Neurol. 2020 Sep 18;11:1025.
On reviewing the above article, I did not find anything in the article that was clinically useful.
For a person suffering from symptoms suggestive of myalgic encephalomyelitis, a great resource is the CDC web page, Myalgic Encephalomyelitis/Chronic Fatigue Syndrome. Page last reviewed: December 27, 2021.