Can constipation cause hematochezia?

Constipation does not necessarily cause hematochezia.

Typical symptoms of constipation are reduced frequency of defecation, dry stools, and difficulty in defecating. It may also be accompanied by abdominal distension, abdominal pain, loss of appetite, and physical fatigue. Therefore, constipation generally does not cause hematochezia. However, if constipation causes difficulty in defecating, excessive effort during defecation may cause anal fissure, in which case hematochezia may occur and severe pain may be associated. If you suffer from internal hemorrhoids, you may also cause irritation to the hemorrhoids surface mucosa due to constipation when the stool is too dry and hard, and then bleeding occurs, manifested as hematochezia.