The small white bubbles on the hands are considered to be herpes sweat, eczema, blistering ringworm and so on. 1. Sweat herpes: sweat herpes is a blistering skin disease that occurs symmetrically on the hands or feet, the cause of which is not clear, and is considered to be related to allergies, dermatophyte infections, as well as other stimuli, etc. The typical symptom of this disease is small blisters deep in the epidermis, and this disease is a regular recurrence every year, mainly manifesting itself in the form of blisters of intense itchiness on the hands or feet, which are generally symmetrically distributed. 2. eczema: eczema is a chronic inflammatory itchy skin disease, is a kind of etiology is not completely clear, consider and some body internal causes, external causes, social and psychological factors, etc., in the early stage of the onset of erythema, edema, corn size papules and papules and blisters. 3. blister ringworm: blister ringworm is the cause of fungal infection, fungal colonization of the skin surface will cause a series of reactions, lesions at the beginning of the pinpoint-sized deep in the blisters, blister liquid clear, wall thick and shiny, not easy to break, can be fused into a multi-housed blisters, tearing off the wall of the blisters to reveal the honeycomb-like base and bright red vesicles, dry and absorb the appearance of desquamation, itching obvious. The hand white small bubbles, it is recommended to go to the hospital for a detailed examination, for the cause of the symptomatic treatment.