Biofeedback training in children with functional constipation. A critical review.

Many uncontrolled studies suggest that biofeedback training is an effective adjunctive therapy in improving the outcome of functional constipation and/or encopresis in children. This could not be confirmed in controlled studies. Adding biofeedback training after conventional treatment had failed did not provide benefits. The results of biofeedback treatment in children with functional constipation and/or encopresis are disappointing.