Epidural Hematoma – Causes, Symptoms and Treatment
An epidural hematoma is a collection of blood between the skull and the dura mater. It is a medical emergency requiring immediate treatment to prevent serious brain injury.
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An epidural hematoma is a collection of blood between the skull and the dura mater. It is a medical emergency requiring immediate treatment to prevent serious brain injury.
What is an Epidural Hematoma?
An epidural hematoma (also called an extradural hematoma) is a buildup of blood between the inner surface of the skull and the dura mater, the outermost layer of the membranes surrounding the brain. It most commonly results from a ruptured artery caused by head trauma. As blood accumulates rapidly, it creates pressure on the brain, potentially causing life-threatening injury. An epidural hematoma is therefore considered a neurosurgical emergency.
Causes
The most common cause of an epidural hematoma is a traumatic head injury, typically involving a skull fracture that tears the middle meningeal artery, a blood vessel running between the skull and the dura. The resulting arterial bleed fills the epidural space quickly, compressing the underlying brain tissue.
- Motor vehicle accidents
- Falls from height
- Sports injuries (e.g., cycling, skiing, contact sports)
- Physical assault or blunt force to the head
- Skull fractures
Symptoms
A hallmark feature of an epidural hematoma is the so-called lucid interval: the patient briefly loses consciousness after the injury, then appears to recover, only to deteriorate rapidly as the hematoma expands. Not all patients experience this pattern, but it is an important diagnostic clue.
- Brief loss of consciousness immediately after trauma
- Apparent recovery (lucid interval)
- Sudden severe headache
- Nausea and vomiting
- Confusion and altered level of consciousness
- Unilateral dilated and non-reactive pupil (sign of rising intracranial pressure)
- Weakness or paralysis on one side of the body (hemiparesis)
- Seizures
- Progressive decline into coma
Diagnosis
Diagnosis of an epidural hematoma is primarily made using emergency brain imaging. The gold standard is a CT scan (computed tomography) of the head, which typically shows a lens-shaped (biconvex) hyperdense blood collection between the skull and dura. Additional diagnostic steps may include:
- Neurological examination (assessment of consciousness, reflexes, and pupillary responses)
- MRI (magnetic resonance imaging) in less acute or uncertain cases
- Skull X-ray to identify fractures
Treatment
In most cases, an epidural hematoma requires immediate surgical intervention. The speed of treatment is the most critical factor in determining patient outcomes.
Surgical Treatment
The standard procedure is a craniotomy: a neurosurgeon opens the skull, evacuates the blood clot, and cauterizes the bleeding vessel. Relieving the pressure on the brain in a timely manner can prevent permanent neurological damage or death.
Conservative Management
In rare cases involving small hematomas with minimal or no symptoms, close observation in an intensive care unit without immediate surgery may be considered. This requires serial CT scans and continuous neurological monitoring.
Supportive Measures
- Management of raised intracranial pressure (e.g., positioning, osmotic agents)
- Intensive care unit monitoring
- Rehabilitation after surgery (physiotherapy, occupational therapy, speech therapy)
Prognosis
The prognosis of an epidural hematoma is strongly dependent on the time to treatment. When diagnosed and surgically treated promptly, the outlook is often favorable, and full neurological recovery is possible -- particularly in younger patients. Delayed treatment significantly increases the risk of permanent brain damage or fatal outcomes.
References
- Greenberg, M. S. - Handbook of Neurosurgery, 9th Edition, Thieme Medical Publishers, 2020.
- World Health Organization (WHO) - Neurotrauma Guidelines, available at: www.who.int
- Bullock, M. R. et al. - Surgical management of traumatic parenchymal lesions. Neurosurgery, 2006; 58(3 Suppl): S25-46.
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Related search terms: Epidural Hematoma + Extradural Hematoma + Epidural Haematoma