Why Her Baby, Not Mine?
November 3, 2026
You’re scrolling through photos from the playgroup. Your friend’s baby, same age as yours, give or take a week, has a head as round as a grapefruit. Then you look at your own baby, at that flat spot on the back of the head you’ve been staring at for weeks, and the question shows up before you can stop it.
Did I do this?
Let’s sit with that question for a minute, because nobody says it out loud and almost every parent thinks it. You followed the rules. You put your baby to sleep on their back, every single time, because that’s what the pediatrician said and that’s what keeps babies safe. So how does one baby end up with a flat spot and the other doesn’t?
The honest answer is that flat head syndrome, which doctors call positional plagiocephaly, rarely comes down to one thing. It comes down to a handful of factors. Some of them you had a say in. Many of them you never did.
Let’s sort them into two piles.
Pile One: The Things That Were Never Up to You
Start here, because this pile does the most to quiet the guilt.
A baby’s skull isn’t one solid bone. It’s a set of soft, growing plates held together by flexible seams. That’s by design. It lets the head squeeze through the birth canal, and it gives the brain room to grow fast in the first year. But soft and growing also means moldable. Steady pressure on one spot, at the wrong time, can flatten it.
And some of that pressure starts long before your baby comes home.
The womb gets crowded. In the final weeks of pregnancy, some babies end up wedged into a tight position, head pressed against the pelvis or against a twin. Twins and other multiples are more likely to deal with this. So are babies who were breech or who simply grew big in a small space. Firstborns are often mentioned too, since a first pregnancy can mean a snugger fit. Some babies are born with a flat spot already.
Prematurity plays a role. Babies born early have even softer skulls and weaker neck muscles, and they often spend their first weeks lying flat in a hospital bed where turning the head is hard work.
Delivery leaves its mark. A long labor or a delivery assisted with forceps or vacuum can leave a newborn’s head looking uneven. Much of that rounds out on its own. But if one side starts out a little flatter, your baby may naturally settle onto it, and the pressure keeps landing in the same place.
A tight neck muscle can steer everything. This one surprises many parents. It’s called torticollis, a tightness in the neck that makes a baby tilt their head toward one shoulder and turn their chin the other way. A baby with torticollis isn’t being stubborn when they always look to the right. That’s simply the comfortable direction. Nap after nap, night after night, the same spot takes the weight. Torticollis often traces back to how a baby was positioned in the womb.
And some things just are what they are. Research has consistently found that boys are affected more often than girls, and the reasons aren’t fully settled.
Read that list again. A crowded womb. An early arrival. A hard delivery. A tight neck. Being a boy. None of those came from a choice you made at 3 a.m.
Pile Two: The Things You Can Do Something About
Here’s the part that’s worth your energy, because it’s where you have real power going forward. Not as a confession of what you got wrong, but as a list of what helps.
Tummy time. Supervised tummy time while your baby is awake takes pressure off the back of the head and builds the neck and shoulder strength your baby needs to move freely. Plenty of babies hate it at first. Plenty of parents give up after a few rounds of screaming, and who could blame them? Short, frequent sessions tend to go better than long ones. Lying on your chest counts. Getting down on the floor face to face counts.
Switching sides. Babies turn toward what interests them: the door, the window, you. Alternate which end of the crib you lay your baby’s head, so the interesting stuff is on a different side. Change up which arm you hold them in and which side you feed from.
Less time in containers. Car seats, swings, bouncers, and loungers all keep a baby on their back. They’re useful, and nobody is suggesting you stop using them. But the car seat belongs in the car, and more time held upright or on the floor gives that flat spot a break.
Asking about the neck. If your baby always turns the same direction, mention it to your pediatrician. A pediatric physical therapist can often help loosen a tight neck, which helps your baby turn freely again.
One firm rule while you’re at it: keep sleeping your baby on their back, on a flat, firm surface with nothing else in the crib. No wedges, no positioners, no pillows to hold the head turned. Safe sleep guidance warns against them. You handle the flat spot during awake time, not by changing how your baby sleeps.
So What About Your Friend’s Baby?
Here’s the thing about that grapefruit-round head in the playgroup photo. You don’t know what was in your friend’s pile.
Maybe her baby had a roomy pregnancy and an easy delivery. Maybe he turned his head both directions from day one. Maybe he actually liked tummy time, which, let’s be honest, is a gift some parents get, and some don’t. Her baby didn’t escape flat head syndrome because she did a better job. Her baby just had fewer factors stacked up.
Yours had more. That’s not a verdict on you. It’s a description of your baby’s first few months.
Let Go of the Guilt, Hold On to the Next Step
Guilt feels like responsibility, but it isn’t. Guilt looks backward. Responsibility looks forward. And forward is where you can actually help your baby.
So here’s the forward-looking part. Bring the flat spot up with your pediatrician, sooner rather than later. You don’t have to wait for the next checkup. Ask them to check your baby’s head shape, see whether one ear sits farther forward than the other, and watch how freely your baby turns their neck. Your pediatrician can also rule out a less common condition, called craniosynostosis, where the skull’s seams close too early. It looks and is treated differently, which is another reason to get a professional opinion instead of comparing photos.
Mild flattening often improves as babies get stronger, sit up, and spend less time on their backs. Sometimes it needs more help, like physical therapy or, for some babies, a custom cranial helmet. Your pediatrician and a qualified specialist make those decisions based on your baby’s exam and age. What matters most is starting the conversation.
You noticed. You’re asking questions. You’re reading an article about it instead of sleeping.
That’s not the behavior of a parent who did something wrong. That’s the behavior of a parent who’s paying attention.
About Strive Orthotics & Prosthetics
Strive is Michigan’s only pediatric-specialized orthotics and prosthetics clinic. Our lead pediatric specialist is trained at the Children’s Hospital of Philadelphia (CHOP) and Gillette Children’s Specialty Healthcare. We’re independent, family-run, and located right in Shelby Township—so Macomb County families get nationally credentialed pediatric expertise without driving across the metro.
Cranial helmets, SMOs, AFOs, scoliosis bracing, pediatric prosthetics. Free evaluations. Most insurance is accepted.
50714 Van Dyke Avenue, Shelby Township | 586-803-4325| striveop.com
* This story is a composite drawn from real patient journeys. Names and details have been changed to protect privacy.
