Small blisters generally refers to small blisters, small blisters around the wound and itchy may be due to wound infection, or consider contact dermatitis. 1. Wound infection: If small blisters appear around the wound, it may be caused by secondary infection of the local wound, mostly considered to be caused by bacterial infection, etc. The patient may have blisters, itching, pain, redness and swelling. Patients may have symptoms such as blisters, itching, pain, redness and swelling. 2. Contact dermatitis: contact dermatitis is mainly caused by skin contact with exogenous substances that irritate the skin and trigger an allergic reaction. If the patient’s local wound is stimulated by exogenous substances, it may lead to small blisters, papules, edema, flushing and other symptoms. There are many reasons for small blisters around the wound and itching, so it is recommended that patients identify the cause of the disease in a timely manner.