As a new parent, one of the things you may notice on your baby’s head is the soft spot, also known as the fontanelle. This small gap in the skull bones allows your baby’s brain to grow and develop during the first year of life. While it can be concerning for some parents, the fontanelle is a natural and vital part of your baby’s development.

This expert article will discuss the fontanelle, when it will close, and whether parents or caretakers can touch it. We will also explore possible complications that can arise and how to deal with them. It’s important to note that if you have any concerns about your baby’s fontanelle, it’s always best to consult with an expert pediatrician in Miami, Florida, who can provide you with personalized guidance and advice.

With this in mind, here’s what you must know about infant fontanelle.

What is a Baby’s Fontanelle: Defined

An infant fontanelle, also known as a soft spot, is a space on your baby’s skull where the bones haven’t yet fused together. During routine doctor’s visits, your healthcare provider will check your baby’s fontanelles to ensure that their skull is developing correctly.

A newborn’s skull comprises several bones that are not yet fused together. This allows the skull to be flexible during birth, making it easier for the baby to pass through the birth canal. The fontanelles play a critical role in this flexibility by allowing the bones to move and shift as needed.

There are two fontanelles on an infant’s skull: the anterior fontanelle and the posterior fontanelle. The anterior fontanelle is located at the top of the baby’s head, while the posterior fontanelle is located at the back of the head. These fontanelles are typically diamond-shaped and can range in size from a few millimeters to several centimeters.

If you have any concerns about your baby’s fontanelles or skull development, seeking expert help and guidance is crucial. Reach out to an expert like Doctor Ana, a trusted pediatrician in Miami, Florida, who can provide you with the best treatment plan for your baby’s specific needs. 

When Will My Baby’s Soft Spot On the Head Close?

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As mentioned previously, the soft spot on a baby’s head, also known as the fontanelle, is a normal part of a baby’s skull development. The posterior fontanelle, located at the back of the baby’s head, typically closes by the time the baby turns two months old.

On the other hand, the anterior fontanelle, which is located at the top of the baby’s head, can take longer to close. This fontanelle can close anywhere between four and 26 months of age, with the average being around 12 to 18 months. The timing of the closure of the anterior fontanelle can vary depending on various factors such as genetics, nutrition, and overall health.

Remember, the closure of the fontanelles is a natural process and is usually nothing to worry about. However, if you notice any unusual changes or concerns about your baby’s skull development, it’s best to consult with your pediatrician.

Can You Touch the Baby’s Fontanelle?

Many parents may wonder whether they can touch their baby’s soft spot on the head. The answer is yes, you can touch the fontanelle. In fact, your pediatrician will touch it as part of the routine medical examination to check for proper skull development.

However, it’s essential to be gentle when touching the fontanelle. The soft spot is a vulnerable area of your baby’s skull, and excessive pressure or rough handling can cause injury or discomfort. When touching your baby’s fontanelle, use a gentle touch and avoid applying any undue pressure.

Normal Infant Fontanelle: What to Expect

A normal infant fontanelle is typically soft to the touch and slightly curved or bulging. It may be slightly sunken during periods of dehydration or illness, but it should return to its normal shape once the baby is properly hydrated.

If you notice that your baby’s fontanelle is significantly sunken or indented, it could be a sign that your baby is dehydrated. Other symptoms of dehydration include dry mouth, fewer wet diapers than usual, and lethargy. If you suspect your baby is dehydrated, seeking medical attention as soon as possible is essential. Your pediatrician may recommend giving your baby fluids or may admit them to the hospital for further treatment.

On the other hand, a fontanelle that is bulging or tense can be a sign of a severe but rare condition such as encephalitis or meningitis. Other symptoms of these conditions include fever, irritability, poor feeding, and a high-pitched cry. If you notice any of these symptoms or a bulging fontanelle, seek medical attention immediately.

Prematurely Closed Baby’s Fontanelle: Is This a Cause for Concern?

Yes, if a baby’s soft spot on the head closes prematurely, it can be a problem. The premature closure of the fontanelle can happen for a few reasons, including genetic factors, metabolic disorders, and craniosynostosis.

One possible cause of premature fontanelle closure is hyperthyroidism, a condition in which the thyroid gland produces too much thyroid hormone. Another possible cause is hyperparathyroidism, a condition in which the parathyroid glands produce too much parathyroid hormone.

Craniosynostosis is another possible cause of premature fontanelle closure. This is a condition in which the sutures between the bones in a baby’s skull fuse too early, causing abnormal skull growth. Craniosynostosis can cause developmental delays, vision problems, and other complications if left untreated.

If you suspect that your baby’s soft spot on the head is closing prematurely, turn to a medical professional immediately.

What if the Soft Spot on the Baby’s Head Doesn’t Close?

If the soft spot on a baby’s head does not close, it can be a cause for concern. The fontanelle should typically close when the child is two years old. It may be a sign of an underlying condition if it remains open after that age.

There are several common reasons why the fontanelle may remain open. One possible cause is congenital hypothyroidism, a condition in which the thyroid gland does not produce enough thyroid hormone. Another possible cause is Down syndrome, a genetic condition that can cause developmental delays and other health problems.

Rickets, a condition that affects bone development due to a deficiency in vitamin D, can also cause the fontanelle to remain open. Finally, some babies may have a condition called familial macrocephaly, in which the head is abnormally large due to a genetic mutation.

If your child’s fontanelle has not closed by age two, it’s essential to seek medical attention. 

When Should I Contact My Doctor?

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If you notice that the soft spot is bulging, sunken, or has a noticeable change in shape or size, it is a good idea to contact your pediatrician. These can be signs of dehydration, infection, or other underlying health conditions that may require medical attention.

Additionally, if the soft spot has not closed by age two or appears to be closing prematurely, 

it is important to seek medical attention. Your pediatrician can help determine the underlying cause and recommend the appropriate treatment.

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