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Steroid-dependent postvaricella encephalomyelitis
1Department of Pediatric Neurology, University of Alabama, Birmingham.
Abstract:
Postinfectious encephalomyelitis is an acute demyelinating illness that usually has its onset 3 to 7 days after the onset of a viral exanthem and has a monophasic course over 2 to 4 weeks. Recurrent bouts of postinfectious encephalomyelitis have been described that have resolved spontaneously or with short courses of steroid therapy. We report a patient who developed a chronic, steroid-dependent encephalomyelitis secondary to a varicella infection at 5 months of age.
Insights
Postinfectious encephalomyelitis typically resolves quickly. However, this case shows a rare chronic, steroid-dependent form following varicella (chickenpox) in an infant.
Area of Science:
- Neurology
- Immunology
- Pediatrics
Background:
- Postinfectious encephalomyelitis (PIE) is an acute demyelinating condition.
- PIE commonly follows viral exanthems with a monophasic course.
- Recurrent PIE cases usually resolve spontaneously or with steroids.
Observation:
- A 5-month-old infant developed encephalomyelitis after varicella infection.
- The patient exhibited a chronic, steroid-dependent clinical course.
Findings:
- This case presents a rare, prolonged manifestation of PIE.
- Varicella infection can trigger chronic steroid-dependent encephalomyelitis in infants.
Implications:
- Highlights the potential for atypical PIE presentations in infants.
- Suggests the need for vigilant monitoring and tailored treatment for severe PIE.
- Informs understanding of immune-mediated neurological sequelae post-viral infections.