The symptoms of amoxicillin allergy are acute and chronic. 1. Acute is mainly manifested as acute urticaria and anaphylaxis. Acute urticaria is often manifested as generalized wind masses with obvious itching, which can generally subside after stopping the drug and most of the oral antihistamines. However, if the patient shows symptoms of shock such as dizziness, nausea, vomiting, panic, and tightness of breath, he must go to the hospital for emergency treatment.2. Chronic allergy is mainly manifested as measles, scarlet fever-like erythema and erythema multiforme, which usually develops within 4-20 days of drug use, the rash can be relatively limited or widely symmetrical, often accompanied by pronounced itching, and most people can be slowly relieved by antihistamines. However, in case of severe erythema multiforme, the lesions involve mucous membranes and even cause systemic damage to various organs and systems, hospitalization is also required.