A fever that occurs once a month is a viral or bacterial infection that occurs in the body, often due to weaker body resistance. Respiratory or digestive infections are more likely to occur, especially respiratory infections, which can cause nasal congestion, runny nose, sore throat, cough and phlegm. The fever caused at this time needs to be treated with anti-inflammatory drugs. If the condition of clear nose is a fever caused by viral infection, it can be treated with anti-viral drugs, such as Pu Dilan Anti-inflammatory Oral Liquid or Blue Scutellaria Oral Liquid or Four Seasons Anti-Viral Combination. If you cough up yellow sputum or have yellow nasal discharge, the fever is caused by bacterial infection and can be treated with oral antibiotics, such as cefixime, cefradine, cefadroxil or amoxicillin, amoxicillin clavulanate potassium. If the fever is caused by diarrhea, it is recommended to take oral Simethicone for treatment.