Cephalosporin allergy with red dots all over the body will gradually subside and heal after stopping the drug, usually in about 1-2 weeks. Cephalosporin is the general name of cephalosporin antibacterial drugs. Cephalosporin allergy with red dots all over the body is commonly associated with rash and urticaria, mainly manifested as obvious red dots on the skin a few hours after taking the drug, most of which are accompanied by itching. Patients should avoid scratching to prevent the skin from breaking out and leading to infection. If the cephalosporin allergy only manifests as a skin rash without other obvious discomfort, the red spots will gradually disappear on their own after the effect of the drug has passed. If the rash is accompanied by unbearable itching, the patient should go to the infection department of the hospital in time and be treated with anti-allergy medication under the guidance of a professional doctor. If the patient has severe symptoms such as wheezing and difficulty in breathing, he/she should go to the emergency department immediately.