Itching is a characteristic of allergic diseases, and there are two types of red bumps as the typical manifestation, atopic dermatitis or urticaria, both of which are treated in the same direction. If the red bumps can subside on their own, without traces after subside, recurring, consider urticaria, commonly known as “rubella”, need to standardize the oral anti-allergy drugs, such as levocetirizine tablets, imipramine tablets, choose 1-2, regular use, generally a week can be cured. If the red bumps persist, consider allergic dermatitis, also known as eczema, anti-allergy treatment is based on the application of drugs, topical application of mometasone furoate ointment, tretinoin econazole cream, hydrocortisone butyrate cream, etc., if the breakout is obvious, you can add erythromycin ointment. If itching is obvious and affects sleep at night, add oral antihistamines, such as cyproheptadine, loratadine citrate tablets, etc. For both of the above diseases, when conditions allow, combine with Yu Ping Feng granules, sparse wind and antipruritic granules, compound glycyrrhizin tablets, etc., to help regulate immunity. In life, pay attention to not scalding and scratching to avoid stimulating the skin, ensure sufficient rest, improve resistance, do not contact with alcohol, spicy and other stimulating diet, eat more fresh fruits and vegetables, drink more water, do not expose to the sun and excessive exposure to ultraviolet rays.