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Cephalhaematoma
Fig. 19.3: Cephalhaematoma over the right parietal bone - note the blood collection between the pericranium and the outer skull bone surface.
Definition
Cephalhaematoma (also spelled cephalhematoma) is a subperiosteal haemorrhage - a localised accumulation of blood between the periosteum (pericranium) and the outer surface of a skull bone. It is caused by tearing of diploic veins from mechanical trauma during delivery.
- Essentials of Forensic Medicine & Toxicology (2026)
- Bradley and Daroff's Neurology in Clinical Practice
Anatomical Location and Key Feature
The hematoma is confined within the periosteal sheath of a single bone and never crosses a suture line - this is its most important distinguishing feature. The most common bone involved is the right parietal bone. It varies in size from 1 to 5 cm.
The diagram above shows the relevant scalp layers: skin > subcutaneous tissue > aponeurosis > loose connective tissue > pericranium > bone. In cephalhaematoma, blood collects deep to the pericranium but superficial to the bone (subperiosteal plane).
Aetiology / Cause
- Tearing of diploic veins due to mechanical trauma
- Associated with higher birth weight and instrumental delivery (vacuum extraction, forceps)
- Occurs in less than 1% of newborns
Clinical Features
| Feature | Detail |
|---|
| Onset | Not evident at birth; appears a few hours after delivery (as blood slowly accumulates) |
| Swelling progression | Tends to increase during the 1st - 2nd day as more blood accumulates |
| Feel | Fluctuant, boggy swelling |
| Limits | Strictly confined to one bone; does not cross sutures |
| Most common site | Right parietal bone |
| Neurological symptoms | Typically absent |
Comparison with Caput Succedaneum
| Feature | Caput Succedaneum | Cephalhaematoma |
|---|
| Nature | Oedematous swelling (blood + serum) | Pure blood (haematoma) |
| Plane | Above the pericranium (subcutaneous/subaponeurotic) | Below the pericranium (subperiosteal) |
| Crosses sutures? | Yes | No |
| Present at birth? | Yes, immediately | No - appears hours after birth |
| Resolution | 1-7 days | ~2 weeks (Parikh's); weeks to months |
The three extracranial haemorrhage types in order of tissue depth are:
- Caput succedaneum - between skin and epicranial aponeurosis
- Subgaleal haematoma - between aponeurosis and periosteum (most dangerous - can spread under entire scalp and cause haemorrhagic shock)
- Cephalhaematoma - between periosteum and cranial bone (deepest, but confined)
- Bradley and Daroff's Neurology in Clinical Practice
Complications
- Neonatal jaundice (hyperbilirubinaemia) - the degradation of the pooled blood adds to the bilirubin load, worsening physiological jaundice
- Anaemia - from significant blood loss into the haematoma
- Calcification - the haematoma can undergo periosteal ossification if not resorbed, leaving a bony ridge
- Rarely: infection / abscess formation
Forensic Significance
In forensic medicine, the presence of cephalhaematoma is used as one of the signs of live birth and to estimate the length of survival after birth. It shows the usual colour changes of a bruise and disappears in approximately a fortnight (15 days). It indicates the child survived long enough after birth for blood to accumulate subperiosteally, and that mechanical birth trauma occurred.
- PC Dikshit's Textbook of Forensic Medicine and Toxicology
- Parikh's Textbook of Medical Jurisprudence, Forensic Medicine and Toxicology
- Essentials of Forensic Medicine & Toxicology (2026)
Management
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Conservative (watchful waiting) is the standard approach - most resolve spontaneously over weeks to months
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Do not aspirate (risk of introducing infection)
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Monitor bilirubin levels (treat jaundice if needed)
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Monitor for anaemia
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Neuroimaging if there is concern for underlying skull fracture or intracranial pathology
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Instrumental deliveries that cause cephalhaematoma warrant postpartum counselling to parents
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Textbook of Family Medicine 9e
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Pfenninger and Fowler's Procedures for Primary Care