Butt especially itchy and stinging, can be considered to be caused by herpes zoster, should be given antiviral drugs such as valacyclovir treatment, but also can not rule out the papular urticaria, need to apply mometasone furoate cream and other glucocorticoid cream. 1. Herpes zoster: a disease caused by varicella-zoster virus infection, which develops in clusters of blisters on one side of the body, accompanied by itching and stinging. Prompt antiviral treatment is given within 72 hours of rash development. Commonly used medications include acyclovir and vasiclovir, and combined treatment with antiviral creams such as penciclovir cream and acyclovir cream can relieve symptoms and shorten the duration of the disease. The medication should be used according to the doctor’s instructions. 2. Papular urticaria: mostly induced by mosquito bites, the main manifestation is the appearance of scattered skin papules, accompanied by intense itching, touching a pinprick sensation. Can follow the doctor’s instructions to use glucocorticoids coated, such as hydrocortisone butyrate cream, mometasone furoate cream, etc., to play an anti-inflammatory and anti-allergic, anti-itching therapeutic effect. The cause of the buttocks particularly itchy and tingling may also have other reasons, it is recommended that the patient timely medical treatment, under the guidance of the doctor standardized treatment.