Severe throbbing pain that starts 1 to 3 days after tooth extraction
Pain that gets worse instead of better over time
Pain that may spread to the ear, jaw, temple, or neck
Visible empty-looking socket where the blood clot is missing
Exposed bone in the extraction site
Bad breath or a foul taste in the mouth
Increased pain when eating, drinking, or opening the mouth
Swelling that may be mild or absent
Pain not relieved by usual pain medicine
Delayed healing at the extraction site