Right chest to back long blisters may be related to chickenpox, herpes zoster, contact dermatitis and other factors, according to different causes to choose the appropriate way to treat the symptoms. 1. chickenpox: chickenpox is caused by varicella zoster virus infection, before the chickenpox scab has a certain degree of contagiousness, the patient can show to the center of the distribution of spots, papules, blisters, etc. Chickenpox has a certain degree of self-healing, daily to keep the skin clean and hygienic, you can choose to topical erythromycin ointment, glycerine lotion and other medications under the advice of the doctor. 2. Herpes zoster: caused by chickenpox-herpes zoster virus infection, before the onset of rash, there may be weakness, fever, lack of appetite and other systemic symptoms, the affected area of the skin may be burning or burning pain, touching has obvious pain sensitivity. The skin lesions are arranged in bands along a certain peripheral nerve, mostly occurring on one side of the body. It can be treated with oral antiviral drugs such as valacyclovir hydrochloride. 3. Contact dermatitis: It is an acute or chronic inflammatory reaction that occurs in the contact area of the skin and mucous membranes after contact with certain exogenous substances. Typical lesions are well-bordered erythema, and the pattern of lesions is related to the contact material, with papules and papules on it. Exposure to sensitizers needs to be avoided and antihistamines such as loratadine can be taken internally. When found on the right side of the chest to the back of the long blisters, should promptly consult the doctor, and under the guidance of the doctor’s symptomatic treatment, follow the doctor’s instructions standardized medication.