Comparative Case Series of Herpes Zoster in Older Immunocompromised Chinese Adults: Clinical, Immunological, and Treatment Profiles in Four Cases Over 60

Herpes zoster poses severe complications in elderly immunocompromised patients, particularly those with altered drug metabolism and renal impairment, impacting quality of life. To evaluate brivudine's efficacy and safety in such cases, we conducted a retrospective case series at Shanghai Skin Disease Hospital, analyzing four Chinese patients (aged 64-84 years) with complex herpes zoster, including systemic lupus erythematosus, diabetes nephropathy, multiple comorbidities, and trigeminal nerve involvement. Selected for their immunocompromised status and prior antiviral failure or renal concerns, patients received oral brivudine (125 mg once daily) with or without intravenous acyclovir, with outcomes assessed via clinical examination, pain scores, and laboratory monitoring over 7-14 days. All patients experienced rapid symptom relief, lesion resolution, and pain reduction with minimal side effects. Compared to previous use of other antivirals, brivudine was better tolerated and did not require renal dose adjustment. In summary, brivudine appears to be a promising option for elderly immunocompromised patients with herpes zoster, offering effective viral control, favorable safety, and improved clinical outcomes.