Post-infectious
When everything started after that gastroenteritis.
- dysbiosis
- visceral hypersensitivity

Same symptoms, UNIQUE
Not every IBS is the same. IBSyncrasy explains how the gut works, then walks through ten patterns that show why symptoms differ from person to person.
IBS and idiosyncrasy share the letter S, so the two words become one title.
idiosyncrasy /ˌɪdɪəˈsɪŋkrəsi/ noun
A way of reacting that belongs to one person and differs from how most other people react.
From the Greek ίδιος (idios), "one's own", and σύγκρασις (synkrasis), "a blending together".
IBS is a name for a group of symptoms. The name does not say why the symptoms appear.
The usual subtypes sort people into three groups by their stool pattern, and the gut is more varied than that. IBSyncrasy follows the biochemistry behind the symptoms, and shows ten patterns that can stand behind the same complaint.
Nine common symptoms: constipation, flatulence, abdominal pain, gas, diarrhea, cramps, indigestion, bloating, movement inconsistency. All of them can carry one label.
A pattern shows how a condition can look. It does not predict what will happen in another person.
IBS is not one disease. It is not even a few diseases. It is a spectrum of symptoms that comes from each person's individuality.
The food you just ate is about eight meters upstream from the place of the bloating, so it cannot have produced the symptom.
Most of the time it is not stool that was left behind. Specific neurotransmitters keep sending the same sensation.
Hunger is a hormonal signal, and it cannot start that soon. Have you checked your parasympathetic activation?
The food stayed the same. Your microbiome did not.
Section A explains how the gut works, in three chapters. Section B follows ten patterns, one case study each.
Why the gut cannot be reduced to a textbook definition, and how one symptom can come from many different molecular changes.
Lab biochemistry, read together with the symptoms, shows which systems deserve a closer look.
How a person tells the story of their symptoms matters, and so does how a plan is explained back.
Stress makes symptoms louder without being their root. The chapter also explains why "it is all in your head" is not an answer.
Between meals the gut sweeps itself clean, but only if it gets several hours without food to do it.
Clock genes in our cells regulate much of our biochemistry, digestion included. Light, darkness and meal times matter.
Most routine tests exclude other diseases. The book looks at which samples can say more, and what each one cannot show.
Fiber can cause bloating. At the right pace and in the right kind, it feeds the microbes of the colon.
Strain, dose and the place in the gut where it settles all matter. Details of your history help to decide which one makes sense.
Every case study follows the same eight stops. That makes the patterns easy to compare.
Who it concerns
What the pattern is
The history people bring
Which tests, and why
Every result in plain words
How the approach changes
How a plan is adjusted
Why it is an individual IBSyncrasy
Ten patterns. Swipe sideways, or use the left and right arrow keys.
See the writing and the way the book explains, before you decide.