A pharmaceutical formulation for treatment of shingles is provided. The formulation includes between 0.2 mg of menthol per 120 mL of the formulation and 1.0 mg of menthol per 120 mL of the formulation, camphor water, lime water, and a local anesthetic. The local anesthetic includes one of between 0.6 mL of phenol per 120 mL of the formulation and 2.0 mL of phenol per 120 mL of the formulation and between 0.25% concentration by weight of lidocaine and 5% concentration by weight of lidocaine.