Sudden itching of the nose requires careful observation of the skin changes around the nose. If itching occurs around the nose, accompanied by obvious flushing and peeling, consider the possibility of seborrheic dermatitis, which is related to many factors such as poor rest and lack of sleep. You can choose to use oral vitamin B, and then apply topical dehumidification and anti-itch cream, which has a good auxiliary treatment effect. If the nose area itchy place growth of red dots, touch with the place there are obvious protrusions, consider the possibility of papular urticaria, may be directly related to allergies, irritation or mosquito bites. It is recommended that you choose to use compound snake fat ointment, or you can also choose to use Comfrey Ointment for treatment. Do not eat chili peppers, do not drink alcohol and reduce staying up late to prevent aggravation of symptoms until the disease is completely healed.