Herpes zoster is a skin disease caused by varicella-zoster virus infection that manifests mainly on unilateral skin with flaky, erythematous patches still visible as clusters of blisters with pain. After treatment is almost healed, localized itching can occur as a sign of nerve recovery. If itching is obvious, oral anti-allergy medications such as levocetirizine hydrochloride tablets or loratadine tablets can be taken, or topical capsaicin ointment can be applied. However, specific diagnosis and application are recommended under the guidance of a clinician to avoid delaying the condition and causing aggravation.