1. reason: pitaya blood generally has a history of eating pitaya, which is mainly caused by this reason. There are many reasons for hematochezia, including hemorrhoids, intestinal polyps, intestinal cancer, enteritis and so on.

2, characteristics: Pitaya blood is mainly because the anthocyanins contained in Pitaya are difficult to digest and decompose, and the stool is characterized by sparse. The common characteristics of hematochezia are dry stool, blood adhesion, or a small amount of red blood after defecation.

3. Clinical symptoms: The color of pitaya blood is relatively uniform, mostly reddish or pink. The color of bloody stool is mostly dark red or black stool.

Pitaya blood refers to the red urine or feces after eating Pitaya, which is the result of metabolism and excretion due to the existence of red dye in Pitaya. If there are symptoms of digestive diseases such as abdominal pain and diarrhea at the same time, it means that there may be gastrointestinal bleeding. Bloody stool refers to anal or rectal bleeding, which is often caused by digestive system diseases such as hemorrhoids, anal fissure and rectal polyps. The color of bloody stool is usually bright red or dark red, accompanied by pain, constipation, abdominal pain and other symptoms.