<s>[INST] hi,I recently went for a general check up and was given a full mouth debridement, the next day i had fever and chills. I went to another dentist about a week later and was told i have NUG and was put on antibiotic. I am puzzled by this? Can someone please explain? [/INST] Hi I did review your concern. Fever with chills after a dental or a mouth procedure can be due to local infection, or it can be due to a distant organ infection. I would recommend you to consult a physician for a suspected endocarditis if the fever is high grade. The tests required would be local inspection of mouth and also blood cultures as well as echocardiography hope this answer helps you wish you a healthy life. </s>