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Baby's soft spots and dehydration

Baby soft spots, also called fontanelles, are those little openings in your baby's skull that might feel concerning but are actually quite normal and important. These soft spots allow your baby's skull to grow and flex as their brain rapidly develops during the early stages of life. They're like little windows, giving room for your baby's brain to grow comfortably and safely. Fontanelles are particularly handy during childbirth, making it easier for your baby to navigate through the birth canal. As your baby grows, these soft spots gradually close up. This usually happens within the first few months to two years of life, upgrading their skull to a stronger, more protective structure. While fontanelles might seem fragile, they're actually essential for your baby's healthy growth and development.





Understanding the fontanelle


During baby's first year of life, the fontanelle gradually closes as the bones of the skull grow and fuse together. While it's normal for the fontanelle to dip slightly as your baby grows, a noticeably sunken appearance may indicate dehydration. This happens when the body loses essential fluids, including the cerebrospinal fluid that surrounds and protects the brain. It's important to note that severe cases of dehydration-related fontanelle changes should prompt immediate medical attention.





Recognising dehydration signs


Understanding the subtle nuances of a sunken fontanelle can provide valuable insights into your baby's hydration status. While a slightly depressed fontanelle is usually considered normal, a significantly sunken appearance may be a sign of dehydration. This occurs as the body prioritises the preservation of essential fluids, leading to a reduction in the cerebrospinal fluid surrounding the brain. Additionally, a sunken fontanelle may be accompanied by other signs of dehydration, such as dry mouth, decreased urine output, and overall lethargy. Therefore, remaining vigilant in monitoring your baby's fontanelle, along with observing other hydration indicators, empowers you to take proactive steps to ensure their well-being. If you observe a pronounced sunken fontanelle or suspect dehydration, seeking prompt medical attention is crucial to ensure timely intervention.


Additional signs of dehydration


In addition to observing the fontanelle, there are several other signs and symptoms that you can look out for to identify if your baby is experiencing dehydration:


  • Decreased urine output: Monitoring your baby's diaper output is an excellent way to gauge their hydration levels. If you notice a significant decrease in urine output accompanied by darker-coloured urine, it may indicate inadequate fluid intake or excessive fluid loss through sweating, vomiting, or diarrhoea.


  • Dry mouth and lips: Hydrated infants typically have moist and pink lips, as well as a well-lubricated mouth. On the other hand, dryness, chapping, or cracking of the lips may signify dehydration and the need for increased fluid intake.


  • Sunken eyes and lethargy: Dehydration can manifest in your baby's overall demeanour and appearance. If you observe sunken eyes, accompanied by lethargy or decreased responsiveness, it may indicate dehydration.


You can use baby tracker apps like Onoco to track nappy changes (& contents), feeds and any patterns in your babies care, which can be shared with professionals in the event of concerns.


Ensuring your baby stays hydrated


It's important to make sure your baby stays hydrated, especially in warmer weather conditions or whilst they are unwell. Here are some strategies that will aid you in maintaining your little one's hydration levels:


  • Breastfeeding or bottle-feeding: Whether you choose breastfeeding or formula-feeding, ensuring your baby receives adequate nourishment is a priority. Both breast milk and formula contain essential fluids and nutrients that support hydration and overall health. Aim for frequent feeding sessions, allowing your baby to nurse or bottle-feed on demand.


  • Environmental sonsiderations: Keeping in mind the environment in which your baby spends their time is important. Hot weather, dry indoor air, and heated environments can contribute to increased fluid loss through sweating and evaporation. Maintain a comfortable room temperature, dress your baby in breathable clothing, and offer additional fluids during periods of elevated heat or humidity.


  • Encouraging fluid intake: As your baby begins to explore the world of solid foods, incorporating hydrating fruits and vegetables into their diet can further support hydration. Offer small sips of water between feedings, particularly during meals or snacks, to encourage fluid intake and foster healthy hydration habits from an early age.

  • Monitoring hydration status: Stay attuned to subtle changes in your baby's hydration status and respond promptly to any signs of dehydration. Keep track of urine output, observe for changes in behaviour or demeanour, and consult with your healthcare provider if you have any concerns about your baby's hydration levels.


To keep track of your babies needs, changes and anything important, you can use a parenting tracker app like Onoco. If you do ever have any concerns over your babies health or development, be sure to speak to a medical professional.

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