• Internal medicine · Oct 2024

    The Diversity of Neurological Complications Associated with Herpes Zoster: A Retrospective Case Series of 26 Patients.

    • Joe Nemoto, OgasawaraJun-IchiJIDepartment of Neurology, Tokuyama Central Hospital, Japan., and Michiaki Koga.
    • Department of Neurology, Tokuyama Central Hospital, Japan.
    • Intern. Med. 2024 Oct 1; 63 (19): 262126252621-2625.

    AbstractObjective This study clarified a variety of neurological phenotypes associated with varicella-zoster virus (VZV) reactivation. Methods This retrospective single-center study included consecutive patients with herpes zoster accompanied by neurological disturbances from April 2016 to September 2022. A comparative analysis was performed to examine whether or not the neurological phenotype and severity were associated with the distribution of herpes zoster, clinical and laboratory findings, and treatments. Results Twenty-six patients with a median age of 74 years old were enrolled. None of the patients had been vaccinated against herpes zoster. Of the 26 patients, 14 (54%) developed monoparesis, 5 (19%) developed meningitis, 5 (19%) developed encephalitis, 1 (4%) developed paraplegia, and 1 (4%) developed bladder and rectal problems. Monoparesis of the upper limb is associated with herpes zoster involving the cervical and thoracic dermatomes, whereas meningitis and encephalitis often occur in patients with herpes zoster in the trigeminal and thoracic dermatomes. Neurological disability was generally severe [modified Rankin Scale (mRS) score ≥3] on admission [17 of 26 (65%) patients]. Good recovery after admission was associated with a lower mRS value before the onset of neurological disability, clinical meningitis, and elevated cell counts and protein levels in the cerebrospinal fluid. Good recoveries were observed in patients with herpes zoster in the trigeminal or thoracic dermatomes more frequently than in other dermatomes. Conclusion This study revealed that VZV-related neurological complications are heterogeneous, commonly leading to severe disability and poor outcomes, and that neurological phenotypes and outcomes are related to the distribution of herpes zoster.

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