A lot of small blisters on the hands are still itchy, may be related to contact allergy, may also be due to ringworm, sweat herpes and other causes. 1. Allergy: common in allergic body, in contact with detergent, laundry detergent, laundry detergent and other irritating objects, is likely to cause hand skin allergies, may cause a lot of small blisters on the hand is also very itchy. 2. Ringworm: usually caused by fungal infection of the hands, under the stimulation of pathogenic bacteria, can lead to a lot of small blisters on the hands is also very itchy, can also be accompanied by local erythema, pain and other manifestations. 3. Sweat herpes: may be related to genetic factors, mental psychological factors, environmental factors, can lead to a lot of small blisters on the hands is also very itchy, can also be accompanied by pain in the affected area of the skin, and easy to secondary infection. A lot of small blisters on the hand is also very itchy, may also be related to other factors, it is recommended to consult a doctor as soon as possible to check the treatment.