Which of the following is not a common disorder associated with the digestive system?

Diarrhea is a common digestive disorder known as loose motion. The water content in the bowel movement is higher than normal levels due to inefficient water absorption by the intestine. Jaundice is the yellowing of the skin, mostly due to an increased concentration of bile pigment. Dysentery is an inflammation of the intestine causing diarrhea along with traces of blood. All these are associated with the human digestive system. Tetanus is a bacterial disease affecting the jaws and the neck. It is a disorder related to the nervous system.