However, passing mucus in the stool, especially if it is a new symptom, should still be mentioned to a physician at the next office visit. Mucus without an underlying cause, such as one of the pre-existing conditions mentioned above, is a change in bowel habits and should be reported to a physician immediately.
Coughing up blood. Coughing up blood is the spitting up of blood or bloody mucus from the lungs and throat (respiratory tract). Hemoptysis is the medical term for coughing up blood from the respiratory tract. Considerations. Coughing up blood is not the same as bleeding from the mouth, throat, or gastrointestinal tract.
In these cases, mucus symptoms are often associated with diarrhea, abdominal pain, or cramping. Mucus symptoms vary depending on the cause. Some disorders cause mild mucus symptoms that subside quickly, while others may cause severe congestion in the lungs or diarrhea that requires medical treatment.