Use of the Rydel-Seiffer graduated tuning fork in the assessment of vibration threshold in postherpetic neuralgia patients and healthy controls

Conclusions: We have shown a statistically significant decrease in vibration sensitivity in individuals with PHN aged 55-70 years compared to age-matched healthy controls, using the Rydel-Seiffer graduated tuning fork. A prospective study of patients with acute zoster infection is needed to determine the sensitivity and specificity of the graduated tuning fork in predicting PHN in patients with acute zoster infection.