Feet long blisters are very itchy need to rub according to its cause, such as fungal infection, sweat herpes, etc., clear after the choice of antifungal, glucocorticoid drugs for treatment. 1. fungal infections: fungal infections can cause tinea pedis, which leads to feet long blisters very itchy, treatment can follow the doctor’s prescription of external ketoconazole, econazole and other drugs. When the lesions are generalized and the external drugs are not effective or the toenails are involved, itraconazole, terbinafine and other drugs should be taken orally. 2. Sweat herpes: feet long blisters are very itchy may belong to sweat herpes, the pathogenesis of the disease is not clear, can be considered and the focal point of infection, mental factors, hypersensitivity reactions and so on. Treatment can be oral loratadine, external halometasone, mometasone furoate and other glucocorticoid drugs. Feet long blisters are very itchy for different reasons, the use of drugs are also different, it is recommended that the patient timely consultation, follow the doctor’s instructions to use the appropriate medication, do not use drugs indiscriminately, so as not to lead to adverse consequences.