Irritable bowel syndrome
Description
- A disorder of gut-brain interaction (DGBI) - no longer called "functional"
- Recurrent abdominal pain/discomfort related to defecation, with altered stool frequency or form
- *A POSITIVE clinical diagnosis, not a diagnosis of exclusion - endless investigation reinforces illness behaviour*
Subtypes - by stool form on symptomatic days (Bristol scale)
| Subtype | Definition |
|---|---|
| IBS-C | >25% hard (BSFS 1-2) and <25% loose |
| IBS-D | >25% loose (BSFS 6-7) and <25% hard |
| IBS-M | >25% of both |
| IBS-U | Neither |
- Subtype drives drug choice and often switches over time
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