In case of allergy after taking anti-inflammatory drugs, the allergenic anti-inflammatory drugs should be stopped first, and different treatment methods should be chosen according to the different manifestations of allergy. If there is only a mild itching and a small rash, you can buy antiallergic drugs such as Xithromax or Zidrosten at the pharmacy for symptomatic treatment. If the rash is more extensive and the itching is obvious, you can go to the hospital for anti-allergy treatment with dexamethasone infusion and calcium gluconate. However, if after the use of anti-inflammatory drugs, there is a severe rash all over the body, or even respiratory distress, laryngeal edema and other manifestations, as well as symptoms of infectious shock, you should immediately send to the nearest hospital for resuscitation treatment.