Blisters medical mostly refers to blisters, finger blisters itching may be sweat herpes, ringworm, eczema and other diseases caused. 1. sweating herpes: the cause is not clear, mostly related to local allergies, dermatophyte infection, ultraviolet radiation and other factors, the patient is mainly manifested in the hands of blisters with intense itching. 2. ringworm: mainly caused by dermatophyte infection, local if there is excessive sweating, low immunity and other factors will induce ringworm. Patients mainly manifested as blisters, dryness, itching and so on. 3. Eczema: the cause of the disease is mainly related to heredity, immune abnormalities, endocrine metabolic abnormalities, nutritional disorders and other factors, the patient will appear erythema, papules, blisters and other symptoms, but also accompanied by itching. There are many reasons for itchy finger blisters, and it is recommended that patients go to the hospital to clarify the cause of the disease.