List of diseases that include hematochezia as a symptom. Any major, well-known medical conditions associated with hematochezia are included below, listed alphabetically with photos when available. Any maladies, sicknesses or illnesses with hematochezia as a symptom can be seen below. For any real, further diagnosis of something you feel you might have, please consult a doctor. This list includes information about each disease, such as what risks are associated with it. Everything from Crohn's disease to Colorectal cancer is included on this list.This list answers the questions, "What risks are associated with hematochezia?" and "What disease can I have if I have hematochezia?"