Blisters in medicine refers to blisters, small blisters on the feet in the summer is very itchy may be tinea pedis, sweat herpes and eczema and other diseases, you can choose the general treatment, medication and other ways to improve. 1. Tinea pedis: itchy small blisters on the feet in summer may be caused by tinea pedis, it is recommended to change shoes and socks diligently, the patient should follow the doctor’s instructions for external use of antifungal drugs to help inhibit the fungus, such as miconazole, terbinafine and so on. 2. Sweat herpes: sweat herpes may cause small blisters on the feet in summer is very itchy, the patient shall not squeeze the blisters without authorization, you can follow the doctor’s instructions for external use of halometasone, betamethasone, etc. has an itch, anti-inflammatory and anti-itching glucocorticoid ointment. If the itching is intolerable, you can follow the doctor’s prescription oral relief of itching antihistamines, such as cetirizine, loratadine and so on. 3. Eczema: Eczema may cause small blisters on the feet in the summer is very itchy, patients need to clarify the cause, avoid contact. Patients can follow the doctor’s instructions for topical dexamethasone, tretinoin and other glucocorticoid ointment treatment, with anti-inflammatory, anti-itching effect. There are many reasons why small blisters on the feet are itchy in the summer, and it is recommended that patients seek medical examination to clarify the cause of the disease and cooperate with the doctor for standardized treatment.