Erector Spinae Block Versus Thoracic Paravertebral Block for Acute Thoracic Herpes Zoster

Inclusion Criteria: * Over 50 years of age * Chest wall herpetic eruption of less than one week * Moderate or severe pain Exclusion Criteria: * Patient refusal * Eruption more than one week duration * Patients who will not receive appropriate anti-viral therapy * Patients with mild pain * Infection at the site of injection * Patients with a history of renal, hepatic diseases, coagulopathy, steroid therapy, malignancies. * Patient taking chemotherapy and/or radiotherapy.