Safety and Preliminary Efficacy of MK0759 in Postherpetic Neuralgia (PHN)(0759-004)

A Randomized, Double-Blind, Placebo-Controlled, Two-Period Crossover Study to Explore the Safety and Preliminary Efficacy of Oral MK0759 in the Treatment of Postherpetic Neuralgia

The purpose of this study is to test the safety and effect of MK0759 in relieving neuropathic pain as experienced by patients with postherpetic neuralgia (PHN).

Inclusion Criteria:

• Age 18 to 85; diagnosis of postherpetic neuralgia with pain having persisted at least 6 months; dissatisfied with current regimen of pain control; able to complete study questionnaires, patient diary, and comply with daily study medication

Exclusion Criteria:

• Women of childbearing potential; history or evidence of a condition that, in the opinion of the investigator, may interfere with the study interpretation (e.g., diabetic neuropathy or fibromyalgia) or pose undue risk to undergo the course of medication required by the study (e.g., unstable heart disease, morbid obesity, kidney or liver disease).