Itchy hands full of small blisters, consider the sweat herpes, ringworm or contact dermatitis and other causes, you can be under the guidance of the doctor to apply drugs or oral medication treatment. 1. Sweat herpes: Sweat herpes is a special type of hand eczema. Usually manifested as deep pinpoint to corn size blisters, blisters dry to form hand flaking. Consciously varying degrees of itching or burning sensation, can be used externally with glucocorticoids such as mometasone furoate cream, itching symptoms are obvious patients can take oral antihistamines such as loratadine to relieve itching. 2. ringworm: ringworm refers to dermatophytes invade the skin of the hand caused by superficial fungal infections, lesions can be manifested as pinpoint-sized deep in the blisters, blister liquid clear, wall thick and shiny, not easy to break, itching obvious. It can be treated with topical antifungal drugs such as terbinafine. 3. Contact dermatitis: contact dermatitis is due to contact with certain allergenic substances, in the skin mucous membrane contact parts of the inflammatory reaction. The lesions are mostly confined to the contact area, and in severe cases, redness and swelling are obvious and blisters and blisters appear, the latter blisters have tense walls and clear contents. Itching is often self-conscious, and oral antihistamines such as loratadine can be taken to relieve itching. If the hands are full of small blisters itchy and other reasons, it is recommended to go to the regular hospital as soon as possible, to clarify the cause of the disease, and according to the doctor’s prescription medication.