My son is 30 years old and keeps having a reoccurring high fever periodically.  It usually last 3-4 days and occurs around August each year.  He has been to the doctor and  they do blood test that indicate that it is a virus.  This has been happening for about 6-7 years.  What does he need to do?
Thanks for voting your query to Chat Doctor . I will receive your worry about your son. As I understand he is suffering from some kind of intermittent fever. I just want to know some more information that is what test your doctor have done to diagnosed Viral cause of fever and which Virus they detect and further nature of fever weather it is a continuous fever of there is a symptom free period of fever during each episode, is there chills or rigor before episode of fever . Because as I understand it is a seasonal fever every repeated yearly and meantime he remains symptom free. So there could be possibility of allergic or parasitic fever also .so you require some more investigation to detect cause of fever. I would like to suggest you one more investigation