Sweat herpes is not directly related to diabetes. Sweat herpes etiology and pathogenesis is not clear, may be a kind of occurrence in the skin eczema-like hypersensitivity reaction, mental factors, lesion infection, local allergies (nickel, chromium metal allergy) or irritation, allergic body and nervous system dysfunction may be related to the production of this disease, there is a certain genetic predisposition. For patients with diabetes mellitus combined with herpes sweating, it is not enough to treat herpes sweating only, but also need to control blood sugar in time, if the blood sugar control is not good may cause secondary bacterial infections. Diabetic patients with herpes sweating are recommended to go to a regular hospital, cooperate with the doctor to actively treat the disease, or consult a specialized doctor.