Patients with itchy bumps on their elbows are considered to have multiple causes. If the bumps appear on the elbow after a change of season, foreign body discomfort, or exposure to dust mites, often with itchy symptoms, the patient is considered to be allergic and the symptoms usually disappear on their own after moving away from the allergen. In addition, it may also be caused by contact dermatitis, papular urticaria, eczema, psoriasis, scabies and other factors, treatment should be carried out for the cause: 1. Contact dermatitis: the patient’s skin in contact with the outside world produces a metamorphic reaction, there will be erythema, swelling, small bumps and other performance at the elbow, and often accompanied by itching, treatment is usually used loratadine, ketotifen and other antihistamines to stop itching, as well as Topical application of glyburide lotion to reduce inflammation and improve the symptoms of skin lesions. In addition, patients with acute inflammation also need to follow medical advice to use prednisone to relieve allergic reactions; 2, papular urticaria: If the patient’s bumps at the elbow are dominated by diamond-shaped red papules or pimples, and accompanied by itching, it is considered that it may be papular urticaria, patients should promptly go to the hospital, under the guidance of doctors, oral Benadryl, chlorpheniramine and other drugs to reduce itching discomfort, as well as the use of compound The patient’s face, ears, elbows, legs, etc. can appear small bumps, conscious intense itching, and after scratching lesions aggravated, the clinical treatment with drugs, including chlorpheniramine maleate, ketotifen, The clinical treatment is mostly with medications, including anti-inflammatory drugs such as chlorpheniramine maleate, ketotifen, and cycloheximide, and drugs such as tacrolimus and pimecrolimus to stop itching. In addition, patients also need to use drugs such as 3% boric acid solution and 5% lead acetate solution to apply topically to relieve local lesions; 4. Psoriasis: If the bumps on the patient’s elbow show a red or tan appearance and have obvious silvery-white scales, they are judged to be caused by psoriasis. Patients can use topical medications such as retinoic acid cream, tazarotene gel, tacrolimus, pimecrolimus cream, etc. to treat the lesions as required by the doctor, and also physical treatments such as UVB phototherapy, excimer laser, etc.; 5, scabies: often occurs in finger crevices, elbows, wrists, armpits, etc., mainly caused by scabies mite infection, the patient’s wounded area can appear obvious erythema, papules, bumps, and usually The itching is usually intensified at night, and the disease is contagious, so once the patient is diagnosed, he or she should be immediately isolated for treatment. Clinically, topical drugs such as sulfur ointment, 5% triclopyr cream, and 20% zinc oxide sulfur ointment are commonly used to eliminate scabies mites, while oral ivermectin is used for antiparasitic treatment, and patients with severe itching symptoms also need to use antihistamines such as cetirizine and loratadine to relieve symptoms as prescribed by the doctor.