Antihistamines can be taken for sweat blisters. Sweat herpes may be related to infection, local allergies, ultraviolet radiation and other factors, mainly manifested as intensely itchy blisters on the hands or feet. Sweat herpes patients can eat antihistamines, commonly used drugs include loratadine tablets, cetirizine hydrochloride tablets, ibastine tablets, etc., with anti-allergy, anti-itch and other effects, can effectively improve the performance of the skin lesions as well as the symptoms of itching. All of the above drugs should be used under the guidance of a professional doctor, avoid self-medication. Sweat herpes patients are recommended to go to the regular hospital dermatology consultation and treatment, itching is serious, avoid scratching the affected area repeatedly, in order to avoid triggering infection and further aggravate the condition.