Pilot Study Of Pregabalin And Prediction Of Treatment Response In Patients With Postherpetic Neuralgia

Inclusion Criteria:

- Subjects must have pain present for more than 3 months after the healing of the
herpes zoster skin rash.

- At screening (V1) and baseline (V2), subjects must have a score of >=4 on the Numeric
Rating Scale for Pain (1 week recall period).

- At baseline (V2), at least 4 pain diaries must be completed satisfactorily within the
last 7 days and the average pain score must be >=4.

Exclusion Criteria:

- Subjects having other severe pain that may confound assessment or self evaluation of
the pain due to PHN.

- Neurolytic or neurosurgical therapy for Postherpetic Neuralgia

- Skin conditions in the affected dermatome that could alter sensation.