Shingles nerve pain linked to higher dementia risk in massive study

NCT ID NCT07399288

Completed Knowledge-focused Sponsor: China Medical University Hospital Source: ClinicalTrials.gov ↗

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study looked at health records of nearly 69,000 adults aged 40 and older to see if those who develop lasting nerve pain after shingles (postherpetic neuralgia) have a higher chance of getting dementia later. Researchers compared people with and without this nerve pain, matching them by other health factors. The goal was to understand if the nerve pain itself is a risk factor for dementia, which could help with early detection or prevention.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

What this could lead to: If the link is confirmed, it could lead to earlier monitoring or prevention strategies for dementia in people who have had shingles with nerve pain.
What could go wrong: This is an observational study, so it can only show an association, not cause and effect. The results may be influenced by other health factors not fully accounted for.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

Alzheimer disease dementia herpes zoster Neuralgia, Postherpetic postherpetic neuralgia vascular dementia

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

DEMENTIA HERPES ZOSTER POSTHERPETIC NEURALGIA ( PHN )

Contacts and locations

Locations

China Medical University Hospital

Taichung, Taichung City, 40447, Taiwan

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