Upper respiratory tract infections are generally caused by pathogens such as viruses, fungi, and parasites that invade the patient's throat, causing acute inflammation. Viruses are the most common infectious agents, including rhinoviruses, coronaviruses, adenoviruses, influenza viruses, and others, which can cause these symptoms. In some cases, bacterial infections are the cause, often due to exposure to cold weather, sudden drops in temperature, or excessive fatigue, leading to rapid reproduction of viruses or bacteria and triggering the illness. It is advised that everyone actively seek symptomatic treatment under the guidance of a doctor. The main treatment should include rest and drinking plenty of water. Antiviral medicines may be used, such as antiviral oral solutions, heat-clearing and detoxifying oral solutions, or Scutellaria baicalensis oral solutions. If antibiotic treatment is necessary, anti-inflammatory drugs like erythromycin or penicillin may be used. (Note: The above medications should be used under the guidance of a doctor.)