Diarrhea in a 1-Year-Old: Causes and Solutions - Pediatrics

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The 1 year and 5 months old has inconsistent bowel movements?


Hello Doctor, my child is currently 1 year and 5 months old.
Around the age of 1, he started having watery and mushy stools, with a frequency of 1 to 3 times a day, and they have a slightly sour smell.
This has been ongoing for 5 months, and he still experiences mushy stools without complete resolution (he is currently taking traditional Chinese medicine, which has variable effects).
Previously, he was consuming half formula milk mixed with rice flour, but there was no improvement.
His current diet includes: 1.
Milk and rice flour, 2.
White porridge with apple puree and yam puree, and an egg, 3.
Rice crackers.
I would like to ask the doctor what possible issues could be causing this situation.
Thank you.

Xiao Yu, 30~39 year old female. Ask Date: 2023/12/30

Dr. Xiao Kaiwen reply Pediatrics


If a baby’s height and weight are within the normal range, has normal vitality, and shows no signs of fever or infection, the most likely diagnosis is chronic nonspecific diarrhea, also known as toddler diarrhea.
This condition is common in toddlers aged 1 to 2 years who are beginning to explore various new foods, while their gastrointestinal digestive capabilities are still maturing.
There is no need for excessive concern, as this condition will typically resolve naturally as the child grows and their digestive system matures.

Reply Date: 2023/12/30

More Info


Diarrhea in young children, especially in a 1-year-old, can be concerning for parents. It is essential to understand the potential causes and solutions to manage this condition effectively.
In your case, the child has been experiencing watery and mushy stools for about five months, which is quite a long duration for diarrhea in a toddler. There are several possible causes for chronic diarrhea in young children, including:
1. Infections: Viral infections, such as rotavirus or norovirus, are common in children and can lead to diarrhea. Bacterial infections from contaminated food or water can also cause gastrointestinal distress.

2. Dietary Factors: The child's diet plays a crucial role in bowel movements. The introduction of new foods, especially those high in sugar or fiber, can lead to changes in stool consistency. For example, excessive fruit or juice intake can cause diarrhea due to high fructose content.
3. Food Intolerances or Allergies: Lactose intolerance or allergies to certain proteins (like cow's milk or soy) can lead to gastrointestinal symptoms, including diarrhea. Given that the child is consuming milk and rice cereal, it may be worth considering if lactose intolerance is a factor.

4. Malabsorption Syndromes: Conditions that affect nutrient absorption, such as celiac disease or other gastrointestinal disorders, can lead to chronic diarrhea. These conditions are less common but should be ruled out if symptoms persist.

5. Antibiotic Use: If the child has been treated with antibiotics recently, this could disrupt the normal gut flora, leading to diarrhea.
6. Functional Gastrointestinal Disorders: Conditions like functional diarrhea or irritable bowel syndrome can also present with chronic diarrhea in children.

Given the child's current diet of milk, rice cereal, white porridge, apple puree, yam puree, eggs, and rice cakes, it is essential to ensure that the diet is balanced and not overly reliant on any single food group. Introducing a variety of foods, including vegetables and proteins, may help improve stool consistency.
Here are some solutions and recommendations:
- Hydration: Ensure the child stays well-hydrated, especially if diarrhea persists. Oral rehydration solutions can help replenish lost fluids and electrolytes.

- Dietary Adjustments: Gradually introduce new foods while monitoring for any adverse reactions. Consider reducing the intake of high-sugar foods and juices, and increase fiber-rich foods like bananas, which can help firm up stools.

- Consult a Pediatrician: Given the duration of the symptoms, it is crucial to consult a pediatrician. They may recommend stool tests to check for infections, allergies, or malabsorption issues.
- Probiotics: Discuss with the pediatrician the possibility of introducing probiotics, which can help restore the balance of gut bacteria and may alleviate diarrhea.

- Monitor Symptoms: Keep a diary of the child's diet and bowel movements to identify any patterns or triggers that may be contributing to the diarrhea.

In conclusion, while occasional diarrhea can be normal in young children, persistent diarrhea lasting several months warrants further investigation. A healthcare professional can provide tailored advice and treatment options based on the child's specific situation.

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