The itchy area where the Band-Aid is applied is more likely to be contact dermatitis. Contact dermatitis is an inflammatory reaction that occurs at the site of contact after exposure to certain exogenous substances. The typical lesion is a well-defined erythematous plaque with the same shape as the Band-Aid. In this case, the band-aid must be stopped and oral antihistamines such as loratadine tablets, cetirizine tablets, and olopatadine tablets must be taken for anti-allergy and anti-itch symptomatic treatment, and topical glucocorticoid creams such as mometasone furoate cream and dextran cream can also be used for treatment.