[Management of chronic constipation in the infant].

Constipation is a common symptom of various pathologies with dysfunction of the intestinal motricity which largely differ in their expression and severity. However chronic idiopathic constipation is by far the most frequent condition. Only constipations associated with symptoms such as poor nutritional status, failure to thrive, signs of upper intestinal tract obstruction (gross abdominal distention), or showing resistance to the usual therapeutic approach, justify investigations looking for an organic disease, mainly Hirschsprung disease. Treatment of chronic idiopathic constipation requires, first to evacuate the fecal mass, then to prevent its reconstitution mainly by dietetic measures, regular large hydration, stool modifying therapy, daily bowel habit, and regular physical activities; in addition it is important that clear and reassuring explanations be given to the parents.