<s>[INST] I have had an infection below my left back molar for a long time.  Had a root canal in July and pain is back once again.  Dentist put me on Amoxicillin and sent me back to Endodontist.  Amoxicillin wasnt working so endo changed it to Clyndomyicin four times a day.  That was Tuesday and now its Sunday.  No relief. Infection feels like its getting worse.   Yesterday I woke up with a circular sore on my inner thigh.  Its red, itchy, bumpy and is white on the inside of the circle.  What could this be? [/INST] Hello, Welcome Thanks for consulting Chat Doctor I have gone through your query, as you have said that you have infection in molar tooth, don't worry you should go for proper Root canal treatment and do warm saline gargle and the consult your dentist for medications As you have sore in your thigh you can put Betadine powder on it and take one Tablet Co-trimoxazole twice daily for 3 days and consult physician for that, Hope this will help you.  Wish you good health. </s>