The causes of small blisters on the body include chickenpox, herpes zoster, genital herpes, ringworm, etc. Targeted treatment needs to be taken according to the cause. 1. chickenpox or herpes zoster: caused by chickenpox – herpes zoster virus infection, lesions initially red rash, with the increase of tissue fluid exudation, blisters can appear, need to give acyclovir, adenosine and other drugs antiviral treatment, secondary infection can be used topical fusidic acid cream. 2. Genital herpes: caused by herpes simplex virus infection, characterized by clustered blisters, can cause the phenomenon of clear blisters on the skin, need to carry out antiviral treatment, can be used externally with Penciclovir cream or Glycolite lotion for treatment. 3. ringworm: caused by fungal infection, can lead to the appearance of pimples, blisters, itching and other symptoms on the skin, you can use topical amorolfine, terbinafine and other antifungal drugs for treatment. Small blisters on the body may have other reasons, it is recommended to go to the hospital in a timely manner to clarify the cause of the disease, follow the doctor’s instructions standardized treatment, do not self-medication.