Rectal polyp is one of the most common causes of hematochezia in children, which is more common in children aged 3-6. Blood in stool is characterized by blood at the end of defecation, which is small and not mixed with feces.
2, anal fissure
Anal fissure refers to the laceration of the edge of the anal orifice, which is more common in infants around two years old. Hematocrit in the stool is characterized by a little blood in the anus. At the same time, it is accompanied by pain in defecation. When the child loosens the stool, he will cry and feel uneasy, and the stool will be dry and hard.
3. Acute intussusception
Intussusception is one of the most common acute abdomen in infancy. It is more common in infants under two years old, especially in infants of 4-10 months. Bloody stool is characterized by jam-like stool. The sick child suffers from paroxysmal crying and vomiting due to abdominal pain.
4. Meckel's diverticulum (formerly known as Meckel's diverticulum)
This is a congenital intestinal malformation, which is a cyst formed on the intestinal wall due to abnormal development, and it is more common in children under two years old. Bloody stool is characterized by sudden massive bloody stool, first black and then red.
5. Acute necrotizing enteritis
The bloody stool of acute necrotizing enteritis is characterized by red bean soup and meat-washing water sample, which smells fishy, accompanied by high fever, abdominal pain, vomiting, diarrhea and other symptoms, and in severe cases, shock may occur. Blood routine examination showed that white blood cells increased significantly.
6. Other diseases such as peptic ulcer, intestinal malrotation and repeated deformity, gastroesophageal reflux, esophageal hiatus hernia and portal hypertension can all cause gastrointestinal bleeding and produce hematochezia.