Small blisters on the fingers may be the cause of hand eczema, tinea cruris, burns, sweat herpes and so on. 1. Hand eczema: the onset may be related to hand contact with animal fur and various types of chemical substances, often manifested as erythema on the basis of the needle tip to corn-like size of the papules. In severe cases, small blisters may appear, often fused into a piece, the boundary is not clear, and the papules around the lesions are gradually sparse, often due to scratching to form punctate vesicles, with obvious plasma exudation. Self-conscious itching is intense, scratching, hot water washing can aggravate the lesions. 2. Ringworm: caused by fungal infection, blister ringworm occurs in between the fingers, usually pinpoint large deep in the blisters, blister liquid clear, wall thick and shiny, blister liquid absorption can appear after the flaking, itching is very obvious. 3. Scald: finger scalded parts of the body fluid exudation gathered in the subcutaneous finger small blisters, can be accompanied by a slight itching, scalded parts of the pain is more intense. 4. Sweat herpes: mostly related to local allergies, infections, sweating, mental factors, there will also be small blisters and itchy fingers. Therefore, fingers with small blisters and itchy should go to the hospital in a timely manner, clear causes under the guidance of the doctor for formal treatment.