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.
When the body starts to produce too much mucus, it accumulates in the lungs among other areas, and the problems begin. Coughing, breathing trouble, chest pain, discomfort in the chest area, and fatigue are some of the symptoms that characterise the build-up of mucus in the lungs.