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NCT07399288

Postherpetic Neuralgia After Herpes Zoster and Incident Dementia Risk

Completed Last updated 11 February 2026
What this trial tests

trial testing Exposure: postherpetic neuralgia in Herpes Zoster in 68,786 participants. Completed in 31 December 2024.

Timeline
1 October 2015
Primary endpoint
31 December 2024
31 December 2024

Quick facts

Lead sponsorChina Medical University Hospital
StatusCompleted
Study typeOBSERVATIONAL
Enrollment68,786
Start date1 October 2015
Primary completion31 December 2024
Estimated completion31 December 2024
Sites1 location across Taiwan

Drugs / interventions tested

Conditions studied

Sponsor

China Medical University Hospital

Who can join

Adults 40 to 120, any sex, with Herpes Zoster or Dementia. Patients with the condition only — healthy volunteers not accepted.

Sponsor's own description

This retrospective observational cohort study uses de-identified electronic health record data from the TriNetX Global Collaborative Network to evaluate whether postherpetic neuralgia after herpes zoster is associated with an increased risk of incident dementia. Adults aged 40 to 120 years with incident herpes zoster between 1 October 2015 and 31 December 2024 are identified using diagnostic codes. Postherpetic neuralgia is defined by International Classification of Diseases, 10th Revision, Clinical Modification (ICD-10-CM) codes B02.22 or B02.29 recorded between 90 and 365 days after the index herpes zoster date, and comparators have no such codes within 365 days after index. The primary analysis uses 1:1 propensity score matching and a 365-day landmark design, including only individuals alive and free of dementia at the landmark. Time-to-event analyses estimate hazard ratios for incident dementia and related outcomes.

Publications & conference data

No peer-reviewed publications indexed yet for this trial. Completed trials usually publish results within 12-18 months.

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Other recruiting trials for Herpes Zoster

Currently open trials in the same condition.

Other China Medical University Hospital trials

Trials by the same sponsor.

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Data sources for this page

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