Lai, H Henry, Krieger, John N, Pontari, Michel A et al. · The Journal of urology · 2015 · DOI
This study looked at bladder pain patterns in people with chronic pelvic pain conditions. Researchers found that most patients experienced either pain when their bladder filled up or pain/pressure sensations when feeling the urge to urinate. People with these bladder symptoms also reported more severe pain, more frequent urges to urinate, depression, fatigue, and poorer quality of life compared to those without these specific bladder symptoms.
ME/CFS patients frequently experience comorbid urological symptoms and chronic pelvic pain. This study identifies distinct symptom phenotypes within pelvic pain syndromes and demonstrates their association with systemic symptoms including chronic fatigue syndrome, depression, and high somatic symptom burden—all relevant to understanding the multisystem nature of ME/CFS.
This study cannot establish causation between bladder symptom patterns and systemic symptoms due to its cross-sectional design. It does not prove that painful filling or painful urgency directly causes depression, fatigue, or IBS; rather, it documents that these symptoms co-occur. The findings cannot determine whether bladder symptoms drive systemic illness or represent manifestations of an underlying shared pathophysiology.
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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