What Causes Cephalohematoma in Newborns? Key Factors Parents Should Know

Posted on January 8, 2026 written by Jane Paulson in Birth Injuries

Understanding what causes cephalohematoma often becomes a difficult concern for parents after noticing swelling on their newborn’s head. As a Portland birth injury lawyer, we guide families through these moments with clarity and compassion. Cephalohematoma often begins when a newborn experiences pressure or trauma during birth that leads to bleeding beneath the membrane covering the skull. 

Common contributors include tool-assisted deliveries, prolonged labor, larger infants, or multiple births, creating conditions where blood can accumulate under the periosteum. At Paulson Coletti, we recognize how overwhelming these situations can feel, especially if you suspect the injury could have been avoided.

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How Cephalohematomas Develop During Labor and Delivery

A cephalohematoma forms when blood vessels under the scalp rupture during the birthing process. The condition stays confined to one bone of the skull because the periosteum does not cross suture lines. Many families want to know what causes cephalohematoma in the first place, and while some cases occur naturally during labor, others may develop when avoidable forces are applied.

Pressure from the uterus, the birth canal, or assisted delivery tools can place added strain on a newborn’s soft skull. According to the National Center for Biotechnology Information, which provides detailed clinical insight into neonatal head injuries, these injuries primarily stem from trauma that disrupts delicate blood vessels just beneath the scalp.

Common Medical Factors That Increase the Risk

Several circumstances can heighten the likelihood of a cephalohematoma forming during childbirth. These factors often arise before or during labor, yet careful monitoring should help providers recognize and manage them.

Infants born after long or difficult labor face a greater risk because the head endures continued pressure as it descends through the birth canal. Larger babies or those in an unfavorable position may experience added strain. Multiple births can also complicate delivery due to crowded fetal positioning.

When Delivery Tools May Contribute to the Injury

In certain situations, providers use medical instruments to assist childbirth. Although these tools can be necessary, they also require skill and attentiveness. Forceps and vacuum extractors can create significant pressure on the baby’s skull if not handled correctly. Misjudging placement or applying too much force may rupture blood vessels, directly leading to a cephalohematoma.

Parents who later learn about these risks often question what causes cephalohematoma and whether their child’s injury could have been prevented with different medical decisions.

Signs That a Cephalohematoma May Have Resulted From Medical Negligence

While cephalohematomas can develop without provider error, certain circumstances raise concerns about preventability. Negligence may be worth questioning when tool-assisted delivery appears rushed, when excessive traction was used, or when fetal distress signs were overlooked.

A provider who fails to assess labor progression properly may resort prematurely to tools, unnecessarily increasing risk. Likewise, failing to recognize when a baby is too large for safe vaginal delivery can contribute to avoidable complications.

Parents may also notice unexplained swelling, delayed communication from staff about what happened during delivery, or inconsistencies in medical documentation. These details can be important when evaluating whether the injury could have been avoided.

Long-Term Complications Parents Should Watch For

Most cephalohematomas resolve on their own over several weeks. However, some infants experience complications that deserve close monitoring. Swelling can harden as calcium deposits build up, and in some cases, the healing process takes longer than expected. According to PediatricEducation.org, an educational resource offering case-based pediatric learning, gradual recovery is typical; however, some babies may experience prolonged healing or require medical evaluation.

Rarely, cephalohematomas may contribute to jaundice, anemia, or infection if not monitored appropriately. Parents should watch for increased swelling, changes in skin color, or signs that their baby seems uncomfortable when the area is touched.

Long-term concerns often prompt parents to revisit the circumstances surrounding the birth and whether better oversight might have prevented the injury. In many situations, families also find reassurance in learning more about how these injuries progress over time, what signs warrant follow-up care, and which treatments may help alleviate lingering effects. Additional conversations with pediatric providers can offer clarity about developmental milestones, monitoring plans, and when further evaluation becomes beneficial, giving parents a stronger sense of confidence as their child grows.

Concerned About Your Child’s Injury? Talk With a Portland Birth Injury Lawyer

When your child’s birth involves complications, understanding your rights provides an essential layer of support. At Paulson Coletti, we help families assess what happened during delivery, determine whether negligence played a role, and pursue accountability when warranted. 

Our team provides guidance, answers questions, and helps you explore your legal options with understanding and compassion. Call 503-226-6361 to speak with us and learn how we can support your family.