The riskfactor of postherpetic neuralgia

The riskfactor of postherpetic neuralgia - The riskfactor of postherpetic neuralgia

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

JPRN

Registry ID

JPRN-UMIN000060087

Enrollment

200

Registered

2025-12-15

Start date

2025-12-22

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Herpes zoster, Herpes zoster-associated pain, Postherpetic neuralgia

Interventions

None listed

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Patients aged 18 years or older who are within 3 months of herpes zoster onset at the time of consent Patients who are able to provide informed consent to participate in the study

Exclusion criteria

Exclusion criteria: Patients already diagnosed with chronic pain in whom the initial pain screening makes it difficult to determine whether the pain is related to herpes zoster Patients who are expected to be difficult to follow up Patients with deformities or a history of surgery in the lower limbs or measurement sites that prevent accurate gait assessments or muscle thickness measurements

Design outcomes

Primary

Measure	Time frame
Presence or absence of postherpetic neuralgia (PHN) at 3 months after the onset of herpes zoster	—

Secondary

Measure	Time frame
1. Pain scores (VAS, NRS, McGill Pain Questionnaire, PCS, EQ-5D, PDAS) 2. Analgesic consumption 3. Frailty (Barthel Index, Short Physical Performance Battery, J-CHS, J-CFS)	—

Countries

Japan

Contacts

Public ContactShogo Tsujikawa

Osaka Metropolitan University Anesthesiology

shogo.tsujikawa@omu.ac.jp0666452186

Outcome results