Itchy fingers long blisters need to be treated according to the cause of the symptoms, common causes include blister ringworm, sweat herpes, eczema, etc., usually using medication. 1. Blister ringworm: hand blister ringworm is due to dermatophyte infection caused by the hand skin disease, manifested as blisters on the skin surface, peeling, dry and other symptoms, accompanied by different degrees of itching. Local topical antifungal drugs such as terbinafine hydrochloride cream can be used, severe symptoms, can be combined with oral antifungal drugs, such as itraconazole capsules. 2. Sweat blisters: sweat blisters may be related to allergies, dermatophyte infections and other factors, manifested as hands or feet skin blisters with intense itching, early on can be localized topical glycerine lotion to stop itching; if there is peeling of the skin, can be localized topical tretinoin cream, urea ointment and so on. Severe itching, can be combined with the application of oral medications, such as loratadine tablets and other antihistamines. 3. Eczema: allergy-prone people, when the hands come into contact with certain allergens, such as animal fur, clothing, cosmetics, metal, etc., may trigger atopic dermatitis, manifested as pimples, erythema, papules, dryness and so on on the surface of the skin, accompanied by intense itching symptoms. Local short-term topical glucocorticoid cream, such as hydrocortisone cream, tretinoin cream, etc., to relieve the symptoms, if the itching is serious, you can also take oral antihistamines, such as dicloxacortin, ibastine, etc.. All of the above drugs should be used under the guidance of a professional doctor, avoid self-medication. Itchy blisters on fingers may also have other causes (such as atopic dermatitis, etc.), it is recommended to go to the hospital in a timely manner.