Can infant lactose intolerance cause bloody stools?

Written by Quan Xiang Mei
Pediatrics
Updated on September 10, 2024
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When infants experience lactose intolerance, there is a possibility of bloody stools. With lactose intolerance, infants will exhibit symptoms such as an increased frequency of bowel movements, diarrhea, and bloating. If the frequency of bowel movements is particularly high, for instance more than ten times, or even more, especially over a prolonged period, the gastrointestinal function of the infant is not very perfect. An increase in bowel movements can exacerbate damage to the gastrointestinal mucosa, potentially leading to bloody stools. Additionally, when the frequency of bowel movements is very high, it could lead to damage to the perianal skin, which might also result in bloody stools. Or, when an infant has lactose intolerance, if they are also suffering from other viral or bacterial infections in the gastrointestinal tract, the likelihood of bloody stools may increase. Therefore, if we consider that an infant has lactose intolerance, it is crucial to promptly add lactase for treatment and to switch to a different formula for oral administration.

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Written by Tong Peng
Pediatrics
1min 6sec home-news-image

What are the effects of lactose intolerance in infants?

Lactose intolerance in children primarily causes an imbalance in the gut microbiome, leading to digestive system symptoms such as bloating, diarrhea, and abdominal pain. The main mechanism is the insufficient secretion of lactase in the baby's intestines, which fails to digest and absorb lactose in food, resulting in symptoms of lactose intolerance. In such cases, the intake of probiotics orally and reducing the intake of foods containing lactose can be helpful. If the baby is fed with formula or breast milk, taking lactase orally or switching to lactose-free formula milk for feeding can be considered. If the child has already started on solid foods, halt the intake of dairy products and simply continue feeding with solid foods, such as porridge, noodles, or rice flour. If a baby shows signs of lactose intolerance, it is crucial to monitor for symptoms of dehydration. If there are signs like poor skin turgor, low energy, or reduced urine output, it is essential to seek medical attention promptly from a specialist to manage and prevent the aggravation of dehydration symptoms.

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Written by Li Jiao Yan
Neonatology
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Symptoms of baby lactose intolerance

If a child has lactose intolerance, the main symptoms are related to the digestive system, such as frequent bloating. Children may experience bloating and restlessness at night, and even signs of intestinal colic. There are abnormal bowel movement frequencies, such as constipation for several days, as well as diarrhea with a noticeable increase in stool frequency and a looser stool consistency. Sometimes, there may be symptoms of bloody stools, which should alert caregivers to the possibility of lactose intolerance. Lactose intolerance is divided into primary and secondary forms. Primary lactose intolerance is more common in Chinese due to genetic factors. Secondary lactose intolerance is mainly due to other reasons that lead to a deficiency of intestinal lactase, with infections and acute gastroenteritis being common causes. For children with lactose intolerance, lactase can be added to breast milk or lactose-free formula can be used. It is also advised to regularly recheck urinary lactose levels. If levels return to normal, breastfeeding can continue. If abnormalities persist, gradually introduce solid foods, as a normal diet usually does not significantly affect the child.

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Written by Wu Hai Wu
Gastroenterology
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Can lactose intolerance cause eczema?

Lactose intolerance generally does not cause eczema in patients. Lactose intolerance can be divided into primary lactase deficiency, secondary lactase deficiency, and congenital lactase deficiency. Patients with lactose intolerance mainly experience symptoms such as abdominal pain, diarrhea, nausea, vomiting, increased bowel sounds, intestinal colic, and bloating. Some patients experience reduced intestinal motility, leading to constipation, and the severity of symptoms is related to the amount of dairy products consumed. Therefore, a small number of patients can tolerate a certain amount of dairy products without experiencing significant symptoms, and the specific tolerable amount varies from person to person.

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Written by Tong Peng
Pediatrics
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Do infants with lactose intolerance need to switch to a different formula?

Whether to switch formula for infants with lactose intolerance should be assessed based on the specific condition of the baby. If the baby's symptoms of lactose intolerance are mild, they can be managed by adding lactase and probiotics. However, if the baby has had diarrhea for a long time, frequent bowel movements, and also shows signs of reduced urine output, decreased skin turgor, and lethargy, it indicates a more severe dysfunction in the digestive system. In this case, it is necessary to switch to lactose-free formula to prevent exacerbation of gastrointestinal dysfunction. It is also important to pay attention to the baby's food hygiene and hand hygiene in daily life, especially during the peak season of diarrhea in autumn. It is advisable to get vaccinated in advance to prevent the transmission of other digestive system diseases.

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What should I do if lactose intolerance makes me feel like vomiting?

People with lactose intolerance often feel nauseous and should avoid drinking milk. If they must drink milk, it needs to undergo special treatment first. Consuming untreated milk can lead to diarrhea in lactose-intolerant individuals, and severe cases may result in dehydration and electrolyte imbalance. Additionally, those with lactose intolerance should also check for any milk allergies or diarrhea caused by indigestion. It is essential to conduct allergen tests and, if necessary, take oral medication to regulate the digestive system.