There are still things that can happen 12 hours after a wasp sting, and it is generally considered safe for a patient who has been stung by a wasp to be unresponsive for 72 hours. It is recommended to treat a wasp sting promptly and also to wash the skin clean with soapy water. The toxicity in hornets contains neurotoxins, which usually cause significant pain within a few hours of contact with the skin, and some people will have an allergic reaction, with severe cases of anaphylaxis. Being stung by a wasp for 12 hours is still in the danger zone, so don’t take it lightly as your body may become unwell. If the symptoms of a wasp sting are not too serious, it is usually possible to recover without special treatment, usually after 72 hours, but if the symptoms are more serious, have the doctor dislodge the stinger, and then use an acidic liquid to clean it afterwards. If there is no obvious discomfort after 72 hours of a wasp sting, it is generally safe and considered to have passed the danger period. It is recommended to monitor your symptoms and seek medical attention if you experience discomfort.