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.

37-38 weeks pregnant, 7-8 weeks pregnant, Prenatal

Acupuncture and Pregnancy

Did you know that acupuncture is a safe alternative practice during pregnancy and for the baby? Along with Karèya Audet,

35-36 weeks pregnant, Baby/parents, Prenatal

Physical Exam of a Baby

Parents may not know how a newborn will physically look after birth, and it may worry them. Marie does a

33-34 weeks pregnant, Childbirth, Prenatal

Preparing your Stay in the Hospital

Who will go with you to the hospital? What papers do you need to fill in before admission? What is

17-18 weeks pregnant, Prenatal

Prenatal Yoga

Doing yoga during pregnancy is both possible and a great idea. In addition to soothing discomfort during pregnancy and feeling

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.