What purpose do a baby’s fontanelles on their head have?

What purpose do a baby’s fontanelles on their head have?

Updated article on October 16th, 2019.

I saw a soft hole on my baby’s head. I know it’s normal, but I wanted to see if it’s dangerous for my baby if we touch it. Is it? And why is it there?

Amélie

There are two fontanelles on a baby’s head. One is on the top, which is called the anterior and shaped like a diamond. The second is smaller and shaped like a triangle, and is called the posterior fontanelle because it’s normally on the back of the skull. These two openings are essential for skull mobility during childbirth and expansion as the baby’s brain develops. These portions of the skull are softer and more fragile, but won’t be harmed by regular daily movements, so don’t worry! For 96% of babies born at term, the larger fontanelle will close by 24 months, and the smaller around 4 months.

I hope this helps!
Talk soon,

Marie
The Baby Expert

Discover our videos

Subscribe to a monthly or quarterly package now to access full videos.

27-28 weeks pregnant, Childbirth, Prenatal

Contractions

Contractions scare many pregnant women. If you understand why they occur, how to identify and calculate them and when you

33-34 weeks pregnant, Childbirth

The Bonapace method

Are you nervous that your baby is coming soon? Do you have questions about your role as caregiver during labour

7-8 weeks pregnant, Prenatal

Pregnancy Monitoring

Did your pregnancy test come back positive? Congratulations! Now, what are the stages and exams that will lead you down

9-10 weeks pregnant, Prenatal

The Midwife Profession

Johanne Royer, a midwife, talks with Marie about her profession. What type of training did she get? What’s her role

View all available videos

Warning

The mariefortier.com website and the comprehensive information it contains are intended as practical tools for expectant parents preparing for the arrival of their baby. These are not meant to replace the skills, knowledge, and experience of qualified health professionals who are familiar with the facts, circumstances, and symptoms specific to each individual. As such, Marie Fortier Inc. and its employees cannot be held responsible for any potential adverse effects or consequences resulting from the use of information provided on this website. It is the user’s responsibility to consult a physician or other qualified health professional for personal matters concerning them.