<s>[INST] Hi. I am 33 m in Doha, Qatar. Had sarcoidosis which went in to remission 5 months ago. Had a temporary dental filling inserted on Saturday. Sunday I developed fever- around 38.3. Took paracetamol 1000mg with the usual flu remedies- cough syrup, throat lozenges, orange juice. On Monday I was no better having also developed severe back stiffness and a congested cough. Replaced paracetamol with Lymsip. Last night fever was up and down- I would sweat and then fever would return. Today, Tuesday, was more of the same. Just stayed home from work after lunch and slept 4 hours- again, sweat fever off but still feeling pretty crappy. Do I need to do anything else or do I just give this time and keep fighting? [/INST] Hello, I suspect you have a tooth abscess with systemic effects or sepsis with bacteria in the blood stream. Please inform your dentist. You may require antibiotics. I would prescribe amoxicillin for an abscess. You may have come down with a virus at the same time you had dental work done, and then you are doing the correct methods. Give your body a chance to heal. A compromised system can react to stress. Keep well HY Chat Doctor.  Maintain proper daily dental care. Anti-inflammatory medication may be continued and heal up feel better. Thank you for your inquiry. I hope you start to feel better soon. </s>