The first thing that needs to be clarified is whether it is pus that appears after the herpes breaks down or a pus-like cloudy liquid that appears inside the herpes when the herpes does not break down, which needs to be handled for different situations: 1. unbroken: If the herpes becomes cloudy when the herpes does not break down, it is similar to pus at this time, but it is not really pus and there is usually no clear bacterial infection. After the herpes becomes cloudy, it will usually break down, and after it breaks down, it will crust over and gradually get better, so there is no need to worry about it. It is important to note that this condition is usually accompanied by a drop in body temperature, if the temperature does not drop but rises, it means that there is a secondary infection, which requires antibiotic treatment for the infection; 2. has broken down: If pus appears after the herpes breaks down and the body temperature rises, it mostly suggests a secondary bacterial infection, which can be identified as septic. First of all, symptomatic treatment is needed for fever symptoms, you can choose antipyretic and analgesic drugs, such as acetaminophen, ibuprofen, etc.; you also need to use topical antibiotic ointment, such as erythromycin ointment, etc.; if the symptoms are serious, you also need to take oral antibiotic drugs, such as macrolides, etc.