Gut and Psychology Syndrome describes constipation, bloating, flatulence and other digestive symptoms as sources of discomfort and pain in children with autism. When a child cannot describe that pain, Campbell-McBride says it may be expressed through self-stimulation, self-destructive behavior, tantrums or refusing food.[1]
Behaviors That Can Accompany Digestive Pain
The passage names repetitive movements, self-injurious behavior, tantrums and food refusal. It also describes children taking unusual postures or pressing their abdomen against hard furniture in an attempt to relieve discomfort.[1] These observations belong beside the child’s digestion and communication, rather than becoming a diagnosis from behavior alone.
What Children Who Can Speak Say Instead
Campbell-McBride contrasts this with children who have other GAPS conditions and can communicate their symptoms. Those children often report tummy aches and nausea directly.[1] The comparison keeps the digestive symptoms in view even when the child cannot name them.
Why the Digestive Context Matters
The book places these behaviors directly after its description of alternating diarrhea and constipation, undigested food, strong-smelling or frothy stool, acidic stool, pale floating stool, severe constipation, bloating, flatulence and night waking from gas pain.[1] Reading the behavior beside the digestive pattern preserves the physical context Campbell-McBride gives it.
If your child cannot tell you where it hurts, describe what you can see: when the behavior began, whether it happened around eating or a bowel movement, and what appeared to bring relief. Use my stool-sign guide and the guide to fecal compaction with overflow to put those observations beside the digestive pattern.
What to Track Alongside Behavior
Keep the note short enough to use: the time, the behavior, the meal or bowel movement nearby, and any stool change, bloating, gas, nausea or night waking. The book describes night-time crying that eases when gas moves or passes.[1] Record what happened before and after rather than writing only “a bad night.” My food-and-symptom journal guide gives a manageable format.
Your Next Step
For help organizing these observations, my Reading Your Child’s Signs course and Care Team Log are listed in the WFLI Shop. Begin with one day of clear notes and take them to the person helping assess the digestive concern. Continue with my GAPS and autism overview and the explanation of the bowel term used in the book for the wider context.
References
- Natasha Campbell-McBride. GAPS: Gut and Psychology Syndrome, expanded second German edition (2015), Part 1, digestive symptoms, communication and expressions of abdominal discomfort.


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