<s>[INST] have a tooth infection.  Went to a dentist yesterday who had a quick look in my mouth and prescribd 500mg amoxicillan and to see him back in a week.Felt progressively worse since the appointment with him, swelling to face has got worse, generally just feeling ill/headache/sore throat etc aswell as the obvious pain discomfort from the infection.  Gums have turned white in some places and now and again a blotchy rash appears on top half of body which disappears after few minutes.  Im really worried that the infection has spread and become dangerous, also concerned after reading on internet that antiobiotics wont cure it anyway.  Please help.. [/INST] Thanks for your query, I have gone through your query. The swelling in the face and gums could be secondary to tooth infection. Only penicillin will not be effective, you need to take metronidazole 400 mg bid for 5 days(if you are not allergic). Then consult moral physician and get the tooth treated. The rashes on the top half of the body could be a separate issue, it can be secondary to allergic reaction to some food items, Chat Doctor.  Consult a general physician and get it evaluated. If it is an allergic reaction then you have to take anti-allergic  </s>