Blisters refer to blisters. Itchy small transparent blisters on the body may be caused by papular urticaria, prickly heat, chicken pox and other diseases, the patient should consult a doctor in a timely manner to clarify the cause of the disease and then carry out the appropriate treatment. 1. papular urticaria: also known as insect bite dermatitis, mostly associated with mosquito bites, often manifested in the bite site of pimples or blisters, erythema, etc., accompanied by itching, which can also lead to itchy transparent blisters on the body. 2. prickly heat: mostly seen in summer in a hot and humid environment, due to the blockage of sweat ducts lead to sweat is difficult to evaporate, so that sweat retention to form prickly heat, which can be manifested as white transparent blisters, accompanied by itching, tingling sensation. 3. Chickenpox: It is caused by varicella zoster virus infection and is contagious. Mainly manifested as erythema, papules, blisters and other lesions on the body, the patient will also have generalized fever and other symptoms. There may be other causes of small transparent blisters on the body, it is recommended to go to the hospital in a timely manner, a clear diagnosis, symptomatic treatment.