A Signal for Voice and Speech Abnormalities in Myalgic Encephalomyelitis/Chronic Fatigue Syndrome.
Grach, Stephanie L, Seltzer, Jaime, Orbelo, Diana M · Journal of clinical medicine · 2025 · DOI
Quick Summary
This study explored whether people with ME/CFS experience changes in their voice or speech. Researchers surveyed 685 people with ME/CFS and reviewed open-ended responses from 302 participants. About 9% of respondents mentioned voice or speech changes when describing their disease experience, suggesting this is a real symptom that deserves further attention.
Why It Matters
This is the first formal investigation documenting voice and speech abnormalities in ME/CFS, filling a research gap and validating patient-reported experiences. Recognition of these symptoms may improve clinical assessment, diagnostic accuracy, and quality of life monitoring. These findings could prompt future studies investigating underlying neurological or muscular mechanisms in ME/CFS.
Observed Findings
Approximately 9.27% (28 of 302) of respondents mentioned voice or speech changes when responding to open-ended questions about disease experience
38 total mentions of voice/speech-related terminology were identified across qualitative responses
Voice and speech changes were reported spontaneously without direct prompting about these specific symptoms
These abnormalities were reported in context of ME/CFS disease experience and post-exertional malaise discussions
Inferred Conclusions
Voice and speech abnormalities appear to be part of the ME/CFS symptom complex that warrants formal clinical investigation
Previous lack of research on this symptom may reflect underrecognition rather than absence in the patient population
Future formal studies with objective voice and speech assessment are needed to determine true prevalence and mechanisms
Remaining Questions
What is the actual prevalence of voice and speech abnormalities when patients are directly and specifically asked about these symptoms?
What are the specific characteristics and mechanisms of voice/speech changes in ME/CFS (e.g., vocal fatigue, dysphonia, dysarthria, or other types)?
Are voice and speech abnormalities associated with disease severity, post-exertional malaise, or specific ME/CFS subtypes?
What This Study Does Not Prove
This study does not establish how common voice and speech changes actually are in ME/CFS, since participants were not specifically asked about these symptoms—only those who spontaneously mentioned them were captured. It does not identify the biological mechanisms causing these changes or prove they are directly caused by ME/CFS pathology. The study provides no objective measurements of voice or speech function.