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Post-varicella intracranial haemorrhage in a child
Nasuda Danchaivijitr1, Elena Miravet, Dawn E Saunders
1Department of Radiology, Great Ormond Street Hospital, UK.
Insights
Varicella zoster virus (VZV) infection can cause primary intracranial hemorrhage in children, leading to neurological issues like seizures. This rare complication highlights VZV as a potential risk factor for pediatric intracranial bleeding.
Area of Science:
- Pediatric Neurology
- Infectious Diseases
- Vascular Neurology
Background:
- Varicella zoster virus (VZV) is a common childhood infection.
- Arterial ischemic stroke is a known complication of VZV infection in children.
- Primary intracranial hemorrhage (ICH) is a rare but serious VZV-associated event.
Observation:
- A 7-month-old male developed primary ICH two months post-VZV infection.
- Initial symptoms included seizures and right hemiparesis.
- Residual finding at 22 months was left hand preference.
Findings:
- The patient experienced an anterior interhemispheric hemorrhage.
- A focal arteritis of the left anterior cerebral artery was identified.
- The vascular abnormality was transient, showing features of arteritis or vasospasm.
Implications:
- VZV may directly invade cerebral vessels, causing necrotizing angiitis and ICH.
- VZV infection should be considered a potential risk factor for ICH in children.
- This case expands the understanding of VZV-related cerebrovascular complications.
Abstract:
We report a case of a 7-month-old male with primary intracranial haemorrhage 2 months after infection with varicella zoster virus (VZV). His initial clinical course was complicated by seizures and right hemiparesis; when last seen at 22 months the only positive finding was of left hand preference. Although the literature has recently established the association of arterial ischaemic stroke and VZV infection, primary intracranial haemorrhage has been reported only in one case. The child reported here had anterior interhemispheric haemorrhage due to a focal arteritis of the left anterior cerebral artery. The vascular abnormality was transient and had radiological features compatible with either a focal arteritis or vasospasm as a direct result of blood surrounding the vessels. We postulate that direct invasion of VZV caused extensive inflammation of the vessel wall and aggressive tissue penetration resulting in necrotizing angiitis and intracranial haemorrhage. We suggest that VZV infection should be considered a potential risk factor for intracranial haemorrhage in children.
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