Viral fever is often a febrile symptom caused by viruses that infect the respiratory system as well as the immune, urinary, and digestive systems. Viral upper respiratory tract infections are often caused by viral infections such as adenovirus, influenza virus, rhinovirus, and coxsackievirus. Patients often present with high fever, cough, sore throat, body aches, and weakness of the limbs, etc. Some patients may also develop gastrointestinal symptoms such as nausea and vomiting and diarrhea. For example, the common autumn diarrhea in pediatrics is caused by rotavirus infection, and children often have fever, nausea, vomiting, diarrhea and other symptoms. For viral infections, you can choose Chai Hu Oral Liquid, Shuang Huang Lian Oral Liquid and Antiviral Oral Liquid. However, some specific viral infections require antiviral treatment. For example, influenza caused by influenza virus may present with high fever, sore throat, and generalized aches and pains, which require antiviral treatment such as oseltamivir. For example, in AIDS caused by HIV infection, patients often have persistent fever, night sweats, diarrhea, generalized lymph node enlargement, various opportunistic infections and tumors due to decreased body resistance, which require long-term antiviral treatment. Viral infections can involve all systems of the body, and most of them will present with fever. Therefore, patients with fever should not blindly apply antipyretic drugs, but must identify the cause of the disease and then treat it symptomatically.