If you have a fever of 38.5 degrees, as long as the temperature does not continue to rise, you can temporarily refrain from taking fever-reducing drugs and observe what specific symptoms there are, and treat the cause according to the symptoms. If there are symptoms of nasal congestion, runny nose, sore throat, it is a cold, this time you need to take antiviral drugs and cold medicine for treatment, such as Four Seasons Antiviral Combination or Pudilan Anti-inflammatory Oral Liquid together with Vitamin C Yin Qiao Tablet. If there is abdominal pain or diarrhea, you need to check the stool routine to see if it is bacterial diarrhea, and if it is bacterial diarrhea, you need to take antibiotics for treatment. Generally, if cephalexin is not allergic, you can take cefadroxil or cefradine capsules.