What does red mucus in stool indicate?

In clinical practice, the presence of red mucus in stool is generally attributed to two main factors: First, it may be a physiological phenomenon caused by dietary factors—for example, excessive consumption of red-colored foods such as strawberries or red dragon fruit—leading to red mucus in the stool, which primarily indicates indigestion. Second, if red mucus in the stool is accompanied by symptoms such as abdominal pain and distension, it is commonly associated with pathological conditions like ulcerative colitis or chronic proctitis. In such cases, further diagnostic evaluation—including routine stool examination and colonoscopy—is required to identify the underlying cause and guide targeted treatment.