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What Is The Most Common Cause Of Diarrhea In Infants?

Smiling infant lying comfortably in bed

What Is The Most Common Cause Of Diarrhea In Infants?

3 min. read

Diarrhea in infants can worry parents, but it’s a common issue that many babies experience. Understanding the most common causes can help you take the right steps to care for your little one. At Continuum Pediatrics, we’re here to provide helpful information to keep your baby healthy and happy. 

The Most Common Cause: Viral Infections 

The most common cause of diarrhea in infants is viral infections, especially a virus called rotavirus. Rotavirus affects the digestive system and can lead to diarrhea, vomiting, and fever. It’s highly contagious and spreads easily among infants and young children. 

Understanding Rotavirus 

What Is Rotavirus? 

Rotavirus is a virus that infects the intestines. It’s one of the leading causes of severe diarrhea in infants worldwide. 

How Does It Spread? 

The virus spreads through contact with the stool of an infected person. This can happen when babies put their hands or toys in their mouths after touching something contaminated. 

Symptoms to Watch For 
  • Frequent, watery diarrhea 
  • Vomiting 
  • Fever 
  • Belly pain 
  • Signs of dehydration, such as dry mouth, fewer wet diapers, or unusual sleepiness 

Preventing Rotavirus 

  • Vaccination 

The best way to protect your baby from rotavirus is through vaccination. The rotavirus vaccine is given by mouth in two or three doses, starting at two months of age. 

  • Good Hygiene Practices 
  • Hand Washing
    Wash your hands thoroughly with soap and water after changing diapers and before handling food. 
  • Clean Toys and Surfaces
    Regularly clean and disinfect toys, especially if your baby shares them with others. 

Other Causes of Diarrhea in Infants 

While rotavirus is the most common cause, there are other reasons your baby might have diarrhea: 

1. Other Viral Infections 

    Viruses like norovirus or adenovirus can also cause diarrhea. 

    2. Bacterial Infections 

      Bacteria such as E. coli or Salmonella can lead to diarrhea, often from contaminated food or water. 

      3. Food Sensitivities 

        Some babies may react to certain foods or formulas, especially if they have lactose intolerance or a milk protein allergy. 

        4. Antibiotic Use 

          If your baby is taking antibiotics, it can disrupt the natural balance of bacteria in their gut, leading to diarrhea. 

          When to Call the Doctor 

          Diarrhea can lead to dehydration, which can be serious in infants. Contact your pediatrician if you notice: 

          • Diarrhea lasting more than 24 hours 
          • Signs of dehydration: 
          • Dry mouth or tongue 
          • Fewer tears when crying 
          • Fewer wet diapers (less than six wet diapers a day) 
          • Unusual sleepiness or fussiness 
          • Blood or mucus in the stool 
          • High fever (over 102°F or 38.9°C) 
          • Vomiting that lasts more than a few hours 

          Caring for Your Baby at Home 

          • Keep Them Hydrated 

          Offer breast milk or formula frequently. Your doctor may recommend an oral rehydration solution to replace lost fluids and salts. 

          • Monitor Their Diet 

          Continue feeding your baby as usual unless advised otherwise by your pediatrician. For older infants eating solids, bland foods like bananas, rice cereal, and applesauce can be gentle on the stomach. 

          • Practice Good Hygiene 

          Wash your hands and your baby’s hands regularly to prevent the spread of infection. 

          We’re Here to Help 

          At Continuum Pediatrics, we understand that seeing your baby unwell can be stressful. If you have concerns about your baby’s diarrhea or overall health, please don’t hesitate to reach out to us. Our team is dedicated to providing compassionate care and guidance to keep your child healthy. 

          Contact Us 

          If you need advice or want to schedule an appointment, please call our office. We’re here to support you and your family every step of the way. Watching your baby grow and thrive is our top priority. Remember, we’re here to help you navigate any health concerns so your little one can get back to feeling their best.