There are many reasons why small blisters on the body are itchy, such as mosquito bites, eczema, chicken pox and so on. 1. Mosquito bites: mosquito bites on the skin can cause itchy small blisters on the body. 2. eczema: eczema is caused by a variety of factors inside and outside the inflammatory skin disease, can cause small blisters on the body itchy phenomenon, acute attack mainly herpes mound, there will also be the phenomenon of oozing. 3. chickenpox: caused by varicella zoster virus infection, chickenpox can cause small blisters on the body is very itchy, blisters will be accompanied by obvious redness around. There are many reasons why small blisters are itchy on the body, and it is recommended to go to the hospital in time after the symptoms appear, and take standardized treatment according to the doctor’s instructions, not to ignore the symptoms and take them lightly.