If you are allergic to dog hair and have small red dots that itch more and more when you scratch them, you should apply glucocorticoid medication as prescribed by your doctor. If secondary infection, you need to follow the doctor’s instructions for topical antibiotic ointment. 1. Glucocorticoids: common drugs are dexamethasone ointment, mometasone furoate cream and halometasone cream, etc., with anti-inflammatory, anti-allergic and antipruritic effect, can improve the dog’s hair allergy triggered by the itching of the body. 2. Antibiotics: If there is a secondary bacterial infection, you need to follow the doctor’s instructions to use antibiotic ointment, common drugs are mupirocin ointment, fusidic acid ointment and erythromycin ointment. It can kill and inhibit pathogenic bacteria, reduce the symptoms of infection, and promote recovery. Patients who are allergic to dog hair and have small red dots on their bodies that itch more and more when scratched should immediately stay away from the sensitizer to prevent reallergy. It is recommended to go to the hospital to consult the doctor, under the guidance of the doctor to use medication, do not take medication without authorization.