Abstract: An apparatus for use in a diagnostic and biofeedback study and treatment of enuresis having an undergarment to be worn by the patient and sensors for detecting the presence of urine positioned thereon, a monitoring device with a time keeping component, a computer chip for recording the time of each detected enuresis incident, an alarm generating component having several operating modes and a power source component. Further, the apparatus has wires for electrically interconnecting the sensors and the monitoring device, and a clip for attaching the monitoring device to the undergarment.