The evolving profile of herpes zoster outpatients: A literature review of socio-demographics, comorbidities, and clinical manifestations

Objective: This literature review synthesizes recent clinical and epidemiological data on the changing profile of Herpes Zoster (HZ) outpatients, examining how socio-demographic shifts, metabolic conditions, anatomical variations, and real-world preventative practices interact.
Methodology: PubMed, Scopus, Google Scholar, and ScienceDirect were all analyzed academically for articles published from 2021 to 2026. Qualitative synthesis of studies using demographic trends, body mass index (BMI), HbA1c thresholds, and neurological sequelae was conducted in HZ outpatients.
Results: Global and regional registries reveal a structural shift termed "age compression," marked by rising HZ incidence among immunocompetent adults under 50, alongside a consistent female preponderance. From an immunometabolism perspective, an elevated BMI (>25 kg/m2) and Type 2 Diabetes Mellitus significantly accelerate cellular aging and memory T-cell decline, weakening host control over the dormant Varicella zoster virus. Trigeminal and ophthalmic nerve involvement continue to pose substantial risks for ocular complications and severe Postherpetic Neuralgia (PHN). Furthermore, a stark geographic vaccine implementation gap persists in developing nations, where acute reactive antiviral therapies remain the primary clinical approach.
Conclusion: The HZ outpatient profile has evolved from a traditional geriatric model into a complex landscape heavily influenced by metabolic health and lifestyle factors. Effective contemporary management requires robust early screening protocols and expanded access to adult recombinant immunization.