Localized allergy itchy redness can be improved through general treatment and medication to alleviate the symptoms and reduce discomfort, the treatment needs to consult a professional doctor. 1. General treatment: It is recommended to avoid further contact with allergy-causing substances and avoid scratching. 2. Medication: Localized use of glycerite lotion, mometasone furoate ointment, tacrolimus ointment and other medications can be used to alleviate discomfort; when the itching is significant, you can take anti-allergy medications such as chlortetracycline and cetirizine orally to improve the symptoms. Drugs are not absolutely safe and effective, and need to be used in strict accordance with medical advice. Allergies should be promptly consulted, after a clear diagnosis, under the guidance of the doctor for symptomatic treatment.