There is little information on herpes zoster infection in breast cancer patients as a complication during adjuvant chemotherapy. We report a case of herpes zoster in a 65-year-old woman presented with low grade fever and vital signs together with skin symptoms such as severe edema, irritation and itching in the left breast where there was wound drainage. PCR test revealed varicella zoster virus. To the best of our knowledge, the histologic features coupled with PCR led to a diagnosis of herpes zoster.