question: Dear sir,my aunt 61 years of age weighs 50 kgs.  She has been losing weight gradually since the past 6-7 years.She has been having fever since the past 3 months.The fever has been coming everyday and subsides on taking SUMO only(paracetamol doesnt work). All the reports like blood , urine test,urine culture have come normal. Chest,skull,abdominal x-rays, also reveal everything to be normal. sputum test showed negative result. TBFERON detection test from Religare,mumbai revealed gamma interferon  in the blood sample as INDETERMINATE   NOT DETECTED.She has been taking tb treatment since the past one month.Fever still come everday, only respite is she feels better during the times she doesnt have fever and 1/2 sumo now gives respite from fever for 24 hours, while the earlier requirement was one tablet. Do you think we are on the right track, since no particular test for confirming tb was conducted.Her ESR 3 months back was 88mm  and two weeks back it was 44mm.Please tell us when can we hope to get complete respite from fever?