###Human: Why is there pain while opening mouth with pus discharge after wisdom tooth removal? ###Assistant: Hello. Well, this condition is known as dry socket. All you need to do is visit any nearby dentist if possible and get this cleaned or washed properly. Maybe after extraction, you spit something forcefully in 24 hours. This condition is normal. Drink a good amount of water, rinse mouth with salt water properly. Visit the dentist for further cleaning of that pus. Take medicines on time if you are still following any. Wish you good health and happiness. Keep me updated with the improvements. Improper packing of the socket after extraction. IOPA or RVG. Dry socket. Cleansing and proper care. Follow medications.