Allergy to Band-Aids with small blisters and itching often indicates an allergy to Band-Aids and is clinically diagnosed as contact dermatitis. The first aspect of its treatment is to stop using the band-aid and remove it quickly. The second aspect for these small blisters, you can use 3% boric acid solution or some Chinese medicine water with astringent effect and detoxification effect to collapse treatment, to astringent dry these blisters, and then topical use of some glucocorticoid drugs, or furnace glycolic lotion, such as glucocorticoid drugs can be chosen Denide cream and so on. If necessary, oral prednisone, loratadine tablets or cetirizine tablets can also be taken. In addition to medication, it is also important to take better care and try to keep the lesion area out of water to avoid further infection.