<s>[INST] I had a tooth infected requiring treating the infection then doing the root canal. Amoxicillin and Ciprofloaxin tegu irked before root canal. 3 days after root canal serious infection Down into lymph nodes in neck. Clindamycin for three days has helped, but lymph nodes still swollen and infected. Suggestions? [/INST] Hello ,Welcome Thanks for consulting HCM,  Lymph nodes are enlarged  due to infection if there is still infection in your body lymph nodes are enlarged then first you consult your dentist for infected tooth is infection is still there and if not because of tooth then consult a physician for this. </s>