<s>[INST] Dear Doctors, I need to discuss the case of my brother. He got caught by TB 4-5 Years back and after the full course of dots he got well. After that on regular basis we are make the checkup of TB and got no symptoms of TB again. But his cough continues from that long time and now his Lungs are also getting week. Could you please advise any best suggestion or treatment for the same. [/INST] Hello dear,Thank you for your contact to health care magic.I read and understand your concern. I am Dr Arun Tank answering your concern.I suggest you should do GeneXpert testing. This is the good test to detect TB and its resistant pattern.If the above test is negative you can declare it as negative TB.There are some other causes of cough even after the cured TB.This may be enlarged lymphnode, fibrous band etc.I advice you should do bronchoscopy once. This will give you guidance regarding the possible pathology.Curing this condition will automatically cures the cough.Till that time you can take the codeine phosphate. This is the cough suppressant. This should be taken under your doctors guidance as this is the habit forming drug.I will be happy to answer your further concern on bit.ly/DrArun.Thank you,Dr Arun TankInfectious diseases specialist,HCM. </s>