Heterogeneity, Refractory Symptoms, and Multidimensional Care in Pediatric Functional Constipation and IBS-C

Explore the heterogeneity of pediatric functional constipation and IBS-C, the limitations of one-size-fits-all algorithms, and the importance of integrating dietary, behavioral, and psychosocial interventions alongside pharmacologic therapy.

Despite the availability of numerous therapies, many children with functional constipation or IBS-C remain dissatisfied with treatment outcomes, revealing persistent gaps in standard management strategies. Julie Khlevner, MD, attributes these challenges to the heterogeneity of disorders of gut–brain interaction, which often involve comorbid conditions, refractory symptoms, extraintestinal manifestations, and significant impacts on quality of life. In her view, linear, one-size-fits-all algorithms frequently underperform in this context, because they do not fully account for the diverse symptom drivers and multifactorial pathophysiology present in individual patients.

To address this complexity, Khlevner highlights the value of a multidimensional, biopsychosocial approach. For functional constipation, she describes combining pharmacologic and nonpharmacologic treatments to create predictable, comfortable stooling patterns while simultaneously targeting behavioral contributors such as withholding and dysfunctional toileting. Practical behavioral strategies—including scheduled toilet sitting, proper positioning, and reinforcement techniques—are paired with individualized dietary recommendations that focus on age-appropriate fiber intake and hydration and on identifying specific dietary triggers, without resorting to overly restrictive or burdensome diets.

Khlevner also underscores the importance of psychosocial and lifestyle factors, including stress, coping patterns, social media use, and sleep, which can influence symptom severity and responsiveness to interventions in both functional constipation and IBS-C. When indicated, she incorporates behavioral health support such as cognitive behavioral therapy and gut-directed interventions, particularly for patients with marked pain amplification or hypervigilance. Although she acknowledges that access to interdisciplinary care remains a significant challenge, she views integrated models that bring together medical, dietary, and behavioral expertise as critical for optimally managing pediatric disorders of gut–brain interaction.