What causes lower gastrointestinal bleeding?

The causes of lower gastrointestinal bleeding are complex, which may be caused by intestinal inflammatory diseases, intestinal tumors, intestinal polyps, systemic diseases, etc. Details are as follows:

1. Intestinal inflammatory diseases such

as ulcerative colitis, Crohn's disease, intestinal tuberculosis, intestinal typhoid fever, acute hemorrhagic necrotizing enteritis, etc. These inflammations can lead to intestinal mucosal damage, erosion, ulcer, and then cause bleeding.

2. Intestinal tumors,

especially colon cancer, rectal cancer and other malignant tumors, are easy to rupture and bleed on their surface. As the tumor grows, bleeding may gradually worsen and become frequent.

3. Intestinal polyps,

especially those with large diameter, irregular shape and surface ulcers, are prone to bleeding.

Four, systemic diseases

such as leukemia, thrombocytopenia purpura, hemophilia and other blood system diseases, will affect the coagulation function and lead to intestinal bleeding; there are systemic lupus erythematosus and other autoimmune diseases may also cause intestinal lesions and bleeding.

When there is lower gastrointestinal bleeding, it is necessary to conduct a comprehensive examination and diagnosis in time to clarify the specific causes and take targeted treatment measures.