Rome Foundation Working Team Report on overlap in disorders of gut–brain interaction 2025 Simrén et al

Andy

Retired committee member
Abstract

In patients with disorders of gut–brain interaction (DGBI), overlapping non-gastrointestinal conditions such as fibromyalgia, headaches, gynaecological and urological conditions, sleep disturbances and fatigue are common, as is overlap among DGBI in different regions of the gastrointestinal tract. These overlaps strongly influence patient management and outcome. Shared pathophysiology could explain this scenario, but details are not fully understood. This overlap has been shown to be of great relevance for DGBI. In addition, symptoms considered to be caused by a DGBI could have a detectable organic cause, and in patients with a diagnosed organic gastrointestinal disease, symptoms not clearly explained by the pathology defining this organic disease are common.

Thus, the aims of this Rome Foundation Working Team Report were to review the literature on overlapping conditions among patients with paediatric and adult DGBI and, based on the available epidemiological and clinical evidence, make recommendations for the current diagnostic and therapeutic approach, and for future research. Specifically, we focused on other DGBI in the same or different gastrointestinal anatomical region(s), DGBI overlap with organic bowel diseases in remission, and DGBI overlap with non-gastrointestinal, non-structural conditions.

Key points
  • Overlap in disorders of gut–brain interaction (DGBI) diagnoses across and within anatomical regions is commonly observed in both children and adults.

  • With an increasing number of DGBI diagnoses there is a gradual increase in the severity of symptoms and psychological comorbidity and health-care utilization, and a decrease in quality of life.

  • Treating DGBI overlaps requires a comprehensive strategy, and therapeutic regimens can be strategically selected based on the type of overlapping symptoms.

  • In patients with a diagnosed organic gastrointestinal disease, symptoms not clearly explained by the pathology defining this organic disease are common.

  • The recognition of the occurrence of DGBI in patients with organic gastrointestinal disease in remission helps to avoid overtreatment with drugs with potential adverse effects.

  • In patients with DGBI, overlapping non-gastrointestinal conditions such as fibromyalgia, headaches, gynaecological and urological conditions, sleep disturbances and fatigue are common; these are best managed with a multidisciplinary approach.
Paywall
 
In patients with a diagnosed organic gastrointestinal disease, symptoms not clearly explained by the pathology defining this organic disease are common.
This is the only important bit. They are very far from knowing everything. All this speculation over psychological factors is a complete waste given this. It makes no difference whether they can 'explain' none of it, or not all of it, it's all feelings because they can't know what they don't know yet. What they're doing is like writing a book report on a book they only read a few pages.
Yeah, but what’s that? How on earth do you prove that something is cause by gut-brain interaction?

That’s why I thought of FND.
Same thing as above. It's the parts they don't know about. They fill their ignorance with beliefs that make them feel better about it, but ultimately make them massively worse at improving on this ignorance.
 
Given that the IOM report is in the references then chances are that ME/CFS is considered to be one of the "overlapping non-gastrointestinal conditions".

[263] in refs.

Chronic fatigue syndrome (CFS) is characterized by profound fatigue, post-exertional malaise and unrefreshing sleep for at least 6 months, and must be associated with cognitive impairment and/or orthostatic intolerance [263]. Studies of CFS overlap with DGBI in adults have found prevalence rates of 8–14% in patients with IBS [213,264] and 39% in patients with FD [265]. One study found CFS in approximately 50% of children with IBS [74].

FD is functional dyspepsia (eg Mayo).
 
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