Ive had a periodic low-grade fever for the past three weeks (approximately half of the days my temperature will be between about 99-99.5; normal temperature for me is around 98.0).  Im not otherwise experiencing symptoms of illness.  About two weeks ago a doctor said that a fever without other symptoms wouldnt be concerning unless it was above 100.4.  Should I seek a second opinion?  What might be causing this?
Hello, Welcome to ChatDoctorI am Chat Doctor answering your query. I can understand your concern following are few causes of low grade fever, Cold, flu, or other viral infections infectionGastroenteritis (infection of the digestive tract)Lung infections, such as bronchitis, pneumonia, and tuberculosisMononucleosis (viral infection)Parasitic infectionSinus infectionUrinary tract infections. If you have thing of this it must be treated. Before considering your temperature 99 as normal, you should be investigated properly. You can seek a second opinion, there is no harm in it. Hope this suggestion will help you. Good Luck.