<s>[INST] male age 40 h171cm wt 70kg,recurrent fever in 45 to 50 days since 15 yrs all investigation is normal.past h/o arthritis which is cured.fever high grade and remain for 4-5 days after that with or without medicine .fever cured.no dm noHTN,no any other disease [/INST] Hello. Thanks for writing to Chat Doctor. I read and understand your question very well. I try my best to help you. As you have suffering from recurrent fever, so I suggest you to do CBC (complete blood count) test with ESR. Also, advice you to complete a course of good antibiotic, never stop antibiotic in between. There are many cause for recurrent fever like CMV, ABV, Toxoplasmosis, deposits, lupus etc. I suggest you to consult a good physician for this. I hope my advice will help you a lot. Thanks and Regards. Chat Doctor.  </s>