Health Conditions that Cause Mucus in Stool. A sudden onset of mucus in the stool, accompanied by urgent diarrhea, cramping, fever, and blood in the stool may be indicative of a bacterial infection. If you are having any of these symptoms, contact your physician immediately.
Atelectasis, or localized obstruction of the lungs that may result from mucus plug obstruction, can occur resulting to the collapse of a portion of the lungs. This is enumerated by the study published by Respiratory Care in September 2007.
What is the mucus plug? The mucus plug is a thick layer of mucus that lodges in the cervical opening to act as the last line of defense against infection entering the uterus via the birth canal. It protects the uterus and growing baby from bacterial infection.