Urodynamic characterization of giggle incontinence in children.

Giggle incontinence is a complex phenomenon. Urodynamic diagnosis is challenging and is dependent on eliciting laughter. We present the first urodynamic demonstration that giggle incontinence is associated with laughter-induced, asensate DO and concurrent, momentary pelvic floor relaxation. We hope this will provide a more consistent basis for defining this condition in the future.