The causes of elbow bumps include contact dermatitis, psoriasis, eczema, hives, etc. Treatment includes medication. 1. Contact dermatitis: the perverse reaction triggered by the contact of the elbow skin with certain irritating or sensitizing substances can also lead to elbow bumps, and the more you scratch, the more itchy it is. At this time, it is necessary to clarify the irritant or allergen, and avoid re-exposure, and at the same time give medication such as topical hormonal drugs such as halometasone, mometasone furoate, etc., oral loratadine and other drugs. 2. Psoriasis: When psoriasis involves the elbow, the elbow will also appear to be long pimples the more you scratch the more itchy situation. At this time, it is necessary to give topical vitamin D3 derivatives such as Calcipotriol, Tacalcitol, etc., and if necessary, oral retinoids such as Avitamin A and other drugs. 3. Eczema: If eczema is diagnosed, anti-allergy and anti-itching treatments such as Halometasone cream can be given. When the itching is obvious, you can take oral cetirizine and other drugs. 4. Urticaria: If it is urticaria, it will also involve the elbow, there are bumps the more you scratch the more itchy, at this time you need to clarify the cause, give symptomatic treatment, such as external glycerine lotion, zinc oxide ointment and so on. Finally, the phenomenon of elbow bumps the more you scratch the more itchy, please go to the hospital in time to check, the above drugs need to be used under the guidance of a physician.