Hello Dr,
My father 66 years in India is having for the past 3 months unexplained fever between 99-102.5 Dc.All possible tests like Malaria,Typhoid,TB,HIV,Hepatatis B & C , Bone Marrow ,Urinary infection , CSF Lumbar ,Thyroid FNAC,Leptospyrosis ,PCR taken and are Negative.Ultra sound scan of Liver,Chest,abdomen ,Pancreas,neck,Colonoscopy of lower intestine,Rectum and CT scan of abdomen,Head was all normal.He was given lot of antibiotics and paracetamol tabs and injecctions but of no use. 15 days back his Dr.gave NSAID tab (etrocoxib) and the fever stopped.But when he stopped the NSAID tablet fever has again come.He lost weight 6-7 kgs initially but now he maintains his weight.He has High BP and under went Thyroid operation 8 years back and he takes regular medication for both.He also had Cataract surgery on his left eye 6 months back. Can anyone please guide how to treat him for possible cure.