Nursing care
Caput succedaneum vs cephalhaematoma: suture lines, timing and jaundice risk
Written and reviewed by Dana Whitfield, RN, MSN · 4 min read · Updated October 2026
Short answer
Caput succedaneum is scalp oedema present at birth that crosses suture lines and resolves within days. Cephalhaematoma is bleeding beneath the periosteum that does not cross suture lines, often appears hours to days after birth and takes weeks to resolve. Because the trapped blood breaks down, cephalhaematoma raises the risk of newborn jaundice.
Lead with the suture line
The most differentiating finding is whether the swelling crosses a suture. Caput succedaneum is a collection of serous fluid in the soft tissue above the periosteum, so nothing stops it spreading across suture lines. It sits over the part of the head that presented first and feels soft and boggy, sometimes with pitting.
A cephalhaematoma is blood trapped beneath the periosteum of a single skull bone. The periosteum attaches at the sutures, so the swelling is limited to one bone and stops at the suture line. It often feels firmer and more defined. Swellings on both sides with a dip between them can still be bilateral cephalhaematomas, each confined to its own bone.
Timing of appearance and resolution
Caput forms from pressure on the presenting part during labour, so it is present at birth. MedlinePlus notes it usually goes away on its own within a few days, and the head shape returns to normal. A large caput on the first assessment that is clearly smaller by the next day fits this pattern.
Cephalhaematoma results from slow subperiosteal bleeding, so it may be small or absent at birth and become more obvious over the first hours to days. MSD Manual describes resolution over weeks, and occasionally the collection calcifies into a firm lump that remodels later. Swelling that is new or larger on day two points toward cephalhaematoma.
Because appearance changes over the first days, repeated examination is more informative than one look at birth. Note location, size, consistency and whether the swelling stops at a suture, and compare at each assessment. A written description and measurement allow the next nurse to judge whether the swelling is shrinking, stable or enlarging.
Why cephalhaematoma needs follow-up
The blood in a cephalhaematoma is broken down and the haem converted to bilirubin, adding to the load an immature newborn liver must clear. That increases the risk of hyperbilirubinaemia, and large collections can also contribute to anaemia. Caput carries little of this risk, although bruising associated with a difficult birth can contribute to jaundice too.
Nursing priorities therefore include checking skin and sclerae for jaundice, monitoring feeding and stool and urine output, and following the unit's bilirubin screening plan. Measure and document the swelling and its boundaries. Teach parents that the lump resolves slowly, not to massage or press it, and to report increasing yellowness or poor feeding after discharge.
What both share and the swelling not to miss
Both are associated with long or difficult labours and assisted births, and both usually resolve without treatment. Neither should be aspirated or drained as a routine measure, because entering the collection introduces infection risk. Overlap is possible: a newborn can have caput and an underlying cephalhaematoma that becomes clearer as the oedema subsides.
A subgaleal haemorrhage is a different and dangerous collection between the scalp aponeurosis and periosteum. It crosses sutures, can extend toward the neck and ears, and can cause substantial blood loss and shock within hours. Rapidly increasing, fluctuant swelling with pallor, tachycardia or poor perfusion needs urgent escalation rather than reassurance.
Work a hypothetical newborn assessment
Imagine an original practice scenario: a newborn born by vacuum-assisted birth has, on day two, a firm swelling over the right parietal bone that stops at the sagittal suture and was not noted at birth. Options are reassure parents it will be gone tomorrow, aspirate the swelling, monitor for jaundice and document size, or apply warm compresses.
Monitoring for jaundice and documenting the swelling is strongest, because the findings fit cephalhaematoma and its main risk is hyperbilirubinaemia. Reassuring that it resolves overnight describes caput timing. Aspiration risks infection, and compresses have no role. If the swelling instead crossed sutures and was enlarging with rising heart rate, the priority would shift to urgent escalation.
Sources and further reading
MSD Manual Professional: Birth Injuries. Caput crossing sutures; cephalhaematoma beneath periosteum, appearing over first days, resolving over weeks, anaemia, hyperbilirubinaemia and calcification; subgaleal haemorrhage.
MedlinePlus: Caput succedaneum. Cause from pressure during vertex birth, swelling across the scalp, resolution within a few days and jaundice with bruising.
MedlinePlus: Newborn jaundice. Bleeding from a difficult delivery as a cause of increased red cell breakdown and jaundice.
The next step on this is the same as on everything else here: answer questions and read the rationales. Our maternity and newborn practice questions are the closest set to what this page covers.
Common questions
Which one crosses suture lines?
Caput succedaneum crosses suture lines because the fluid is above the periosteum. Cephalhaematoma does not, because the periosteum is attached at the sutures.
How long does a cephalhaematoma take to go away?
It resolves over weeks rather than days, and occasionally calcifies into a firm lump before remodelling. Teach parents to expect slow change and to report jaundice.
Is cephalhaematoma bleeding inside the skull?
No. The blood lies outside the skull, beneath the periosteum, so it does not compress the brain. Unexpected neurological signs still need prompt assessment for other causes.