Itchy blisters on the feet, consider and external friction, eczema, tinea pedis, sweat herpes and other factors related. 1. External friction: often wearing ill-fitting shoes, excessive friction, resulting in localized blisters. The recovery process can cause slight itching. 2. Eczema: Eczema is an inflammatory skin disease, which may lead to localized pimples and blisters if it occurs on the feet. The irritation of localized inflammation leads to itching in the affected area. 3. Tinea pedis: Fungal infections cause tinea pedis, such as blistering tinea pedis, resulting in small blisters on the feet. The fungal infection causes irritation to the local nerves, causing itching. 4. Sweat blisters: the cause of sweat blisters is not yet completely clear, which can lead to the appearance of clustered blisters on the feet. When the disease occurs, the area of the lesions will have different degrees of itching or burning sensation. The appearance of small blisters on the feet, accompanied by obvious itching, may also be caused by mosquito bites. It is recommended to pay attention to the care of the skin, but also to the hospital dermatology department, to clarify the cause, symptomatic treatment.