Efficacy and Safety of Eslicarbazepine Acetate as Therapy for Patients With Post-Herpetic Neuralgia

Inclusion Criteria

• Written informed consent to participate in the study
• Men and women aged 18 years or older
• Previous diagnosis of herpes zoster
• Diagnosis of postherpetic neuralgia and neuropathic pain present for more than 3 months after healing of the herpes zoster skin rash
• Cooperation and willingness to complete all aspects of the study
• Completion of at least 4 daily diaries during the week preceding randomisation
• A minimum average daily pain score of 4 on the NRPS in the last 4 diary entries before randomisation.

Exclusion Criteria

• Pain of other origin that might confound the assessment of neuropathic pain of postherpetic origin
• Active herpes zoster lesion or dermatitis of any origin at the affected site
• Subjects who had neurological ablation by block or neurosurgical intervention for control of pain
• Significant or unstable medical or psychiatric disorders
• Drug or alcohol abuse in the preceding 2 years
• Severe renal function impairment, as shown by calculated creatinine clearance values 2.0 times the upper limit of the normal, white blood cell count (WBC) <2,500 cells/mm3)
• Previous participation in any study with eslicarbazepine acetate
• Pregnancy or breast feeding
• History of hypersensitivity to the investigational products or to drugs with a similar chemical structure
• History of non-compliance
• Likelihood of requiring treatment during the study period with drugs or other interventions not permitted by the clinical study protocol
• Participation in a clinical study within 3 months prior to screening
• Any clinical significant concomitant condition which might influence the assessments or conduct of the trial.