Effects of Pulsed Radiofrequency Treatment of the Supraorbital Nerve for Postherpetic Neuralgia: A Prospective, Randomized, Open, Blinded-Endpoint Trial

Effects of Pulsed Radiofrequency Treatment of the Supraorbital Nerve for Postherpetic Neuralgia: A Prospective, Randomized, Open, Blinded-Endpoint Trial - Effects of PRF-SON for PHN

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000006054

Enrollment

Registered

2011-09-01

Start date

2011-09-01

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

Postherpetic neuralgia

Interventions

Conventional supraorbital nerve block Pulsed radiofrequency of the supraorbital nerve

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1) Postherpetic neuralgia of at least 3 months' duration that could not be controlled with medications. 2) Average pain intensity measured on the numerical rating scale with a score >= 3 (from a 0-10 scale). 3) Temporary positive response (>50% pain reduction) to a diagnostic supraorbital nerve block. 4) Symptoms not attributed to another disorder. 5) Willingness to comply with the allocated treatment and follow-up measurements.

Exclusion criteria

Exclusion criteria: 1) Coagulation abnormalities. 2) History of adverse reactions to local anesthetics or contrast medium. 3) Patients with psychiatric disease or known serious immune disorders.

Design outcomes

Primary

Measure	Time frame
Numerical rating scale Global perceived effect Number needed to treat Duration of pain relief	—

Countries

Japan

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026