1. The discharge of nonfecal material from the bowels via the anus: It was certainly strange that the patient had allochezia following an examination of the substances detected in her stool.
2. The discharge of feces through an abnormal opening: Allochezia is known to take place by the way of a fistula, which is an abnormal communication between two normally unconnected structures, body cavities, or the surface of the body.