Blisters are referred to as blisters in medicine. Itchy hands with small blisters may be caused by herpes sweat, blister-type tinea cruris, eczema and so on. 1. Sweat herpes: if affected by local infection, allergy, irritation, nerve dysfunction and other factors, it will lead to the emergence of small blisters on the hands of the patient, accompanied by varying degrees of itching and burning sensation. 2. Blister ringworm: itchy hands with small blisters may be caused by blister ringworm, the disease is mainly caused by dermatophytes superficial skin fungal infections of the hands, to be blisters dry after the appearance of symptoms such as dandruff. 3. eczema: the disease is mainly caused by a variety of internal and external factors of the superficial dermis and epidermal inflammation, the main clinical manifestations of erythema, papules, papules, blisters, vesicles, oozing, mossy and other manifestations, accompanied by itching and other symptoms. It can also make the hands itchy with small blisters. It is recommended that patients go to the hospital in time, under the guidance of the doctor, targeted treatment.