<s>[INST] Dear Doctor , i am 18 years old and i am suffering from too much bad breath for last few years.i have consult many doctors regarding the matter but no one able to help me.i have read about bad breath on internet where many people post that one does not no that he has bad breath.but my breath is so bad that i clearly smell it.its too bad.Dear Doctor,i am so much tensed and worried about this extreme bad condition.i am from pakistan.kindly help me and recommend me something so that i could relieve from this problem.regards [/INST] Thanks for your query, I have gone through your query. The possible causes for the bad breath could be the gum infection or deposits, pus discharge. Consult an oral physician and take an opinion to rule out these causes. These causes can be treated by getting your teeth cleaned and maintaining oral hygiene. If these causes are not there then, it can be secondary to respiratory disorders like sinusitis or gastrointestinal disorders. Consult a ENT and Gastroenterologist to rule out these causes. Also get your blood investigations done particularly, blood sugar level, because even in diabetes you can have halitosis. I hope my answer will help you, take care. </s>