The causes of bumps on the elbow of patients are considered as follows: i. Tinea corporis: A fungal skin disease caused by ringworm, which is closely related to pets kept at home and caused by the transmission of parasites from pets to people. You can see round red spots at the elbow, and sometimes there can be rice-like blisters with itching, which are more common in summer. In terms of treatment, first of all, you need to take your family pet to a vaccination station and have it treated with deworming injections. Second, you can apply a mixture of compound ketoconazole lotion and bifidazole cream topically. Then, if the itching is severe, you can simultaneously take oral terbinafine hydrochloride tablets. Second, neurodermatitis: mainly due to various mental stress and insufficient sleep, resulting in low immunity of the body, erythema can appear at the elbow, accompanied by itching, and in severe cases, hypertrophy of the skin. In the treatment, you can take oral compound glycopyrrolate tablets and Epastine tablets, and apply a mixture of Denide cream and Urea Vitamin E cream externally. During the treatment period, it is necessary to abstain from spicy and stimulating foods and alcohol, ensure sufficient sleep, pay attention to rest and reduce late nights. For patients with elbow bumps, it is recommended to go to a regular hospital and under the guidance of a dermatologist, conduct appropriate laboratory tests to guide clinical treatment.