RESUMO
This article presents a case report of a three and half year-old boy with functional constipation and sensory hyperreactivity. The Integrated Sensory Toileting® approach was used to guide clinical reasoning and identify the sensory underlying factors that were impacting the child's ability to acquire age-appropriate toileting habits and gastrointestinal health. The six months of treatment in occupational therapy and gastroenterology, as well as six months of follow-up are described. Improvements in sensory reactivity are documented using the Sensory Processing Measure-2 and the Toileting Habit Profile Questionnaire-Revised and corroborate with improvements in the child's ability to participate in toileting routines and improved gastrointestinal health.