Erythema after taking loratadine tablets may be due to drug allergy, the drug can not control the symptoms and so on. Erythema after eating loratadine tablets, may be due to the patient’s body for the existence of the drug allergic reaction, which will lead to the phenomenon of erythema, should immediately stop using the drug, can be replaced under the guidance of the doctor other antihistamines, such as cetirizine hydrochloride tablets, at the same time can be coupled with glycerine lotion wet compresses, to improve the symptoms. In addition to drug allergy, it is also possible that the patient’s condition is more serious, loratadine tablets can not control the symptoms, thus leading to skin erythema. Patients need to avoid scratching the local area, and at the same time to avoid spicy and stimulating food, if the symptoms are more serious, you can choose to use prednisone, dexamethasone and other hormone drugs. After eating loratadine tablets erythema, it is recommended that patients go to the hospital in a timely manner, under the guidance of a professional doctor to replace the drug, not to use drugs indiscriminately, so as not to lead to adverse consequences.