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Health outcomes of sensory hypersensitivities in myalgic encephalomyelitis/chronic fatigue syndrome and multiple sclerosis.
Maeda, Kensei I, Islam, Mohammed F, Conroy, Karl E et al. · Psychology, health & medicine · 2023 · DOI
Quick Summary
This study looked at how common sensitivity to light and sound are in people with ME/CFS compared to people with multiple sclerosis (MS). Researchers surveyed over 2,200 people and found that people with ME/CFS experience these sensitivities much more often than people with MS. People who had both light and sound sensitivity reported feeling worse overall than those without these sensitivities.
Why It Matters
Sensory hypersensitivities are common and debilitating in ME/CFS but are not consistently recognized in diagnostic criteria. This research demonstrates that these symptoms are significantly more prevalent in ME/CFS than in other chronic illnesses, supporting their inclusion in case definitions and highlighting the need for clinical attention to photophobia and phonophobia in patient care and treatment planning.
Observed Findings
ME/CFS participants reported significantly higher rates of light and sound hypersensitivity compared to MS participants.
Participants exhibiting both light and sound hypersensitivity reported greater overall symptom burden than those with neither or only one hypersensitivity.
Sensory hypersensitivities were documented across an international population of 2,240 participants using standardized questionnaires.
Hypersensitivities to light and sound appear as distinct measurable symptoms on the DePaul Symptom Questionnaire in ME/CFS cohorts.
Inferred Conclusions
Sensory hypersensitivities are more characteristic of ME/CFS than MS and warrant inclusion in diagnostic criteria.
The co-occurrence of multiple sensory hypersensitivities is associated with worse overall health status regardless of diagnosis.
Clinicians should routinely assess for and address noise and light sensitivity when evaluating and treating ME/CFS patients.
Sensory hypersensitivities represent an important and underrecognized component of ME/CFS symptomatology that impacts quality of life.
Remaining Questions
What are the underlying neurobiological mechanisms causing heightened sensory hypersensitivity in ME/CFS?
What This Study Does Not Prove
This study cannot establish whether sensory hypersensitivities cause worse health outcomes or result from ME/CFS pathology—only that they co-occur. The cross-sectional design prevents determination of whether these sensitivities develop before, during, or after ME/CFS onset. The findings also do not explain the underlying biological mechanisms driving these hypersensitivities.
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 →
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