Does intussusception cause diarrhea?

Written by Quan Xiang Mei
Pediatrics
Updated on January 26, 2025
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Intussusception is a common surgical condition in infants and young children, characterized primarily by symptoms such as abdominal pain, crying, abdominal distension, the passage of jelly-like stools, and vomiting. Some children may also experience diarrhea and frequent passage of jelly-like stools, where the symptoms of intussusception may not be particularly noticeable, leading parents to possibly overlook them. Therefore, if a child has diarrhea accompanied by jelly-like stools, it is crucial to take the child to the hospital for a consultation and an ultrasound to confirm whether it is caused by intussusception. If left untreated for a long time, it can lead to ischemic necrosis of the intestinal mucosa, necessitating surgical treatment.

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Written by Hu Qi Feng
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Infant intussusception symptoms

Intussusception clinically presents with abdominal pain, which occurs in fits and starts and has a regular pattern. This manifests as sudden spasmodic colic; the child cries and is restless, drawing the knees up to the belly and turning pale. The pain lasts for several minutes or longer, then eases off, allowing the child to fall asleep quietly. These episodes recur every 10 to 20 minutes as intestinal movements provoke further attacks. Vomiting occurs, initially consisting of curdled milk or food residues and later containing bile-stained, feculent fluid. Moreover, blood in stools is an important symptom. Symptomatically, stools may appear normal for a few hours, but within six to twelve hours, 85% of affected children might pass jelly-like mucus blood stools. A palpable lump can be detected in the upper right abdomen, indicative of the point of intussusception. As for general symptoms, the child may appear well early on, but as the condition worsens, intestinal necrosis or peritonitis may occur, leading to severe dehydration, high fever, lethargy, coma, shock, and other signs of systemic toxicity.

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How is intussusception in infants caused?

Intussusception is divided into primary and secondary types, with 95% being primary, commonly seen in infants. This is due to the fact that the mesentery at the ileocecal region in infants is not fully fixed and has greater mobility, which are structural factors that facilitate intussusception. For the 5% of secondary cases, these are more common in older children, whose intestines often have clear organic causes for intussusception. These causes include the inversion of a Meckel's diverticulum into the ileal lumen serving as a lead point; intestinal polyps, intestinal tumors, intestinal duplications, and abdominal purpura can cause thickening and swelling of the bowel wall leading to intussusception. Additionally, certain facilitating factors can disrupt the rhythm of intestinal peristalsis, thereby inducing intussusception. Changes in diet, viral infections, and diarrhea are among the factors that can trigger intussusception.

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How to treat intussusception in children?

Intussusception is a life-threatening emergency that requires urgent reduction once diagnosed. Reduction methods include non-surgical and surgical therapies. Within forty-eight hours of intussusception, if the overall condition is good, there is no abdominal distension, and no significant dehydration or electrolyte imbalance, reduction can be attempted under ultrasound guidance using hydrostatic enema, air enema, or barium enema. If the intussusception has lasted beyond forty-eight to seventy-two hours, or if there is severe abdominal distention, intestinal necrosis, or perforation, surgical treatment is necessary.

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Is intussusception in children serious?

Intussusception is a life-threatening emergency, and its reduction is an urgent treatment measure that should be performed immediately once diagnosed. In the early stages, the child generally appears healthy, with normal body temperature and no obvious symptoms of poisoning. However, as the condition progresses and the duration of the intussusception increases, it can lead to intestinal necrosis or peritonitis, causing a deterioration in the overall condition. Commonly, severe dehydration, high fever, coma, shock, and other serious symptoms of poisoning may occur.

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How to treat intussusception in infants

The treatment of intussusception mainly includes non-surgical and surgical methods. The non-surgical method involves enema treatment. Within 48 hours of the onset of intussusception, if the overall condition is good, there is no abdominal distension, no apparent dehydration, and no electrolyte disorders, ultrasound-guided hydrostatic enema, air enema, or barium enema can be performed. If the intussusception lasts more than 48 to 72 hours, or if the duration is shorter but the condition is severe, with intestinal necrosis or perforation, surgical treatment is required.