Caput succedaneum
The short answer
Caput succedaneum is swelling of the scalp caused by pressure during birth. It is fluid in the scalp tissue itself, not a collection of blood in a space. 1
It is present at birth, it crosses the suture lines, and it resolves within days. It is the mildest of the birth-related scalp swellings and it needs no treatment. 1
The numbers, up front
- What it is
- Fluid and mild bruising within the scalp tissue itself, caused by pressure during birth 1
- When it appears
- Present at birth, unlike a cephalohematoma which appears hours later 1
- Whether it crosses sutures
- Yes. The swelling is in the scalp, above the level of the bone coverings, so suture lines do not contain it 1
- How long it lasts
- Days. Most resolve within two to three days without any treatment 1
- Main association
- Prolonged labor, prolonged pressure of the head against the cervix, and vacuum-assisted birth 2
- What to distinguish it from
- Subgaleal hemorrhage, which also crosses the suture lines but is boggy, grows over hours and can cause dangerous blood loss 1
How does this happen?
During labor the presenting part of the head is pressed against the cervix and the birth canal. That pressure squeezes fluid out of the small blood vessels in the scalp and into the surrounding tissue, and it causes minor bruising.
The result is a soft, puffy area over whichever part of the head led the way. It pits slightly when pressed, and it often has a bruised appearance.
Because the swelling is in the scalp tissue itself, above the coverings of the individual skull bones, nothing contains it. It crosses suture lines and can cross the midline. 1
Vacuum extraction produces a similar swelling in the shape of the cup, sometimes called a chignon. It also resolves over days. 2
The reason this matters is entirely about what it is not. Both caput succedaneum and subgaleal hemorrhage bleeding cross the suture lines. One is trivial and one can be fatal. The difference is in how it feels, whether it grows, and how the baby is doing overall.
What causes it?
Two different questions get mixed together here. The first is what leads to this injury in the body. The second is whether anyone could have prevented it. They are not the same question, and the answer to the first does not settle the second.
Happens even with perfect care
- A long labor with prolonged pressure on the head.
- Prelabor rupture of membranes, with less fluid cushioning the head.
- A first birth, where labor is typically longer.
- Vacuum-assisted birth that was genuinely necessary. 2
- A fast delivery.
- breech or other malpresentation. 3
- Ordinary uncomplicated birth, in which caput is very common. A general patient reference describes it as a normal finding that needs no treatment. 4
Associated with gaps in care
These are situations where published standards say what the care team should watch for and do. A gap here does not prove anyone caused your child's injury. It points to where the medical records will have an answer.
Caput succedaneum on its own is rarely a sign of anything having gone wrong. The gaps that matter are about what else is happening.
- A boggy, growing swelling mistaken for caput, when it is a subgaleal hemorrhage bleed. This is the single most important error in this area, because subgaleal bleeding can cause dangerous blood loss within hours. 1
- A baby not monitored after vacuum-assisted birth, when close observation of the head, heart rate and blood count is standard after operative vaginal delivery. 2
- Vacuum used outside recommended limits, including repeated cup detachments or prolonged application. 2
- Head circumference not measured serially in a baby with head swelling after an assisted birth.
- bilirubin not considered where there is extensive bruising, since bruised blood breaks down and raises it. 5
Whether any of this amounts to a departure from the standard of care takes a physician expert reading the whole record.
What are the signs, by age?
Signs change as a child grows. A newborn cannot show you a walking problem. Some children look fine at first and show differences months later.
At birth and the first hours
- Soft, puffy swelling over the part of the head that led the way.
- The swelling crosses suture lines and may cross the midline.
- It pits slightly when pressed.
- Bruising or discoloration is common.
- Present at the moment of birth.
The first week
- The swelling flattens and disappears over two to three days.
- Bruising fades over about a week.
- jaundice, if bruising was extensive, as the bruised blood breaks down. 5
If the swelling is boggy rather than puffy, if it grows, if it shifts when the head is turned, or if the baby has a fast heart rate or looks pale, that is not caput. That is a subgaleal hemorrhage bleed and it is an emergency. 1
Around 3 months
Nothing expected. Caput has long since resolved.
Around 6 months
Nothing expected.
Around 12 months
Nothing expected.
Toddler years
No expected effects from caput succedaneum.
School age
No expected effects.
None of this is a diagnosis. Children develop at different speeds and one late skill on its own usually means nothing. Bring what you see to your pediatrician, and ask for a referral to early intervention if you are worried. You do not need a diagnosis to be referred.
How is it diagnosed?
Diagnosis is by examination and by timing.
- Present at birth.
- Soft and puffy, pitting when pressed.
- Crosses suture lines.
- Not growing.
- Baby is well, with a normal heart rate and color.
The comparison every parent should see
| Finding | Where it is | Crosses the suture lines | Timing | Seriousness |
|---|---|---|---|---|
| caput succedaneum | Fluid in the scalp tissue | Yes | Present at birth, gone in days | Minor 1 |
| cephalohematoma | Blood between skull bone and its covering | No, stops at the suture | Appears hours after birth, gone in weeks to months | Usually minor 1 |
| subgaleal hemorrhage | Blood in the loose layer under the scalp | Yes, can cover the whole head | Grows over hours | Emergency, large blood loss possible 1 |
No imaging or blood tests are needed for caput itself. 1
Where the birth was assisted, head circumference should be measured serially and the baby observed, which is about ruling out subgaleal hemorrhage bleeding rather than about the caput. 2
Where bruising is extensive, bilirubin monitoring is appropriate. 5
What is the treatment?
None. Caput succedaneum resolves on its own within days. 1
Do not massage or press the area.
The only active steps are the ones that are about something else:
What is the long-term outlook?
Complete resolution within days, with no lasting effects. 1
There is no association between caput succedaneum and later developmental problems, and no extra developmental follow-up is needed beyond the usual well-child schedule. 7 8
Head shape returns to normal as the swelling settles and as the molding of birth resolves over the first weeks.
What does daily life look like?
Nothing changes. Ordinary newborn life.
Handle the head gently for the first days.
Many parents are told their baby has "caput" in passing and then find the word online, where it sits next to descriptions of serious bleeding. It is worth being clear that this is the mild one, and the reason it gets mentioned at all is that clinicians are trained to distinguish it from the serious one.
What does care cost over a lifetime?
None beyond ordinary newborn care. No agency publishes a cost estimate and none is needed.
What can you do this week?
- Ask whether this is caput or something else, and specifically whether it is growing.
- If the birth was assisted, ask whether head circumference is being measured serially.
- Ask whether bilirubin should be checked if there is significant bruising.
- Do not press or massage the area.
- Ask what should be gone by when, so you know if something is not following the expected course.
- Ask what would make you call: a growing swelling, pallor, poor feeding or a fast heart rate.
What should you ask each specialist?
Take these with you. Write the answers down in the moment, because you will not remember them later.
For the pediatrician or midwife
- Is this caput, a cephalohematoma, or something that needs watching?
- Is it growing, and is it being measured?
- Should bilirubin be checked because of the bruising?
- When should this be gone?
For the obstetric team, after an assisted birth
- Was vacuum used, and for how long?
- Did the cup detach at any point?
- What monitoring is planned for the next 24 hours?
You can also build a printable list with the question generator.
Codes you may see on paperwork
These are ICD-10-CM codes. They are how hospitals and insurers label a diagnosis. Seeing one on a bill or a chart tells you what was recorded, not how severe it is. 9
| Code | What it means |
|---|---|
| P12.81 | Caput succedaneum |
| P12.3 | Bruising of scalp due to birth injury |
Questions parents ask
What is the difference between caput and a cephalohematoma?
Caput is fluid in the scalp tissue, present at birth, crossing the suture lines, gone in days. A cephalohematoma is blood between a skull bone and its covering, appearing hours after birth, stopping at the suture lines, and taking weeks to months. 1 The crossing of sutures and the timing are the two features that separate them.
Caput crosses the suture lines and so does the dangerous kind. How do I tell?
By feel, by growth, and by the baby. Caput is puffy and pitting, present at birth, and not growing. subgaleal hemorrhage bleeding is boggy, shifts when the head moves, grows over hours, and comes with a rising heart rate, pallor or poor tone. Growing swelling in an unwell baby is an emergency. 1
My baby had a vacuum delivery and has a swelling shaped like the cup. Is that caput?
That swelling is called a chignon and it is the same kind of thing: fluid and bruising in the scalp from the suction. It resolves over days. What matters after a vacuum birth is close observation of the head, heart rate and blood count for the first hours, because that is the setting in which subgaleal bleeding occurs. 2
Words on this page, in plain English
- caput succedaneum
- Swelling of the scalp from pressure during birth. It crosses the suture lines and it goes away in days.
- suture lines
- The gaps between the separate bones of a newborn skull. Whether a swelling crosses them is how doctors tell one kind of scalp swelling from another.
- subgaleal hemorrhage
- Bleeding into the loose space between the scalp and the skull. A newborn can lose a large share of their blood into this space, so it is treated as an emergency.
- breech
- The baby is positioned bottom or feet first instead of head first.
- bilirubin
- A yellow substance made when the body breaks down old red blood cells. High levels turn the skin and eyes yellow.
- standard of care
- What a reasonably careful provider would have done in the same situation. It is proven with expert testimony, not with a guideline alone.
- jaundice
- Yellow color in the skin and the whites of the eyes, caused by bilirubin.
- cephalohematoma
- A pocket of blood between the skull bone and its covering. It does not cross the skull suture lines and it goes away over weeks.
Where these facts come from
- Elsevier. Volpe's Neurology of the Newborn, Sixth Edition. 2018. www.elsevier.com/books/volpes-neurology-of-the-newborn/volpe. Link checked September 3, 2026.
- American College of Obstetricians and Gynecologists. Practice Bulletin 219, Operative Vaginal Birth. 2020. www.acog.org/clinical/clinical-guidance/practice-bulletin. Link checked September 3, 2026.
- American College of Obstetricians and Gynecologists. Committee Opinion 745, Mode of Term Singleton Breech Delivery. 2018. www.acog.org/clinical/clinical-guidance/committee-opinion. Link checked September 3, 2026.
- U.S. National Library of Medicine. MedlinePlus Medical Encyclopedia. 2025. medlineplus.gov/encyclopedia.html. Link checked September 3, 2026.
- American Academy of Pediatrics, Pediatrics. Clinical Practice Guideline Revision: Management of Hyperbilirubinemia in the Newborn Infant 35 or More Weeks of Gestation. 2022. publications.aap.org/pediatrics/article/150/3/e2022058859. Link checked September 3, 2026.
- American Academy of Pediatrics, Pediatrics. Hospital Discharge of the High-Risk Neonate. 2008. publications.aap.org/pediatrics/article/122/5/1119. Link checked September 3, 2026.
- CDC. CDC Developmental Milestones, Learn the Signs. Act Early.. 2024. www.cdc.gov/ncbddd/actearly/milestones/index.html. Link checked September 3, 2026.
- American Academy of Pediatrics and CDC, Pediatrics. Evidence-Informed Milestones for Developmental Surveillance Tools. 2022. publications.aap.org/pediatrics/article/149/3/e2021052138. Link checked September 3, 2026.
- Centers for Medicare and Medicaid Services. ICD-10-CM Files. 2025. www.cms.gov/medicare/coding-billing/icd-10-codes. Link checked September 3, 2026.