Soft bumps on the elbow may be caused by neurodermatitis, lipoma, bursitis and other diseases. 1. Neurodermatitis: the etiology of this disease is not clear, it may be related to overthinking, poor sleep and other neurological factors, or endocrine disorders, gastrointestinal dysfunction, improper diet, sun exposure and other factors. Skin lesions occur in the elbow, back and other places, the typical skin lesions are tawny papules with normal skin color or light red, which can be manifested as soft bumps on the elbow. 2. Lipoma: Research shows that this disease may be related to heredity, chronic inflammation, and systemic fat metabolism abnormality. Lipoma can grow in any part of the body that has fat, and a soft and elastic mass will appear locally, so the patient has soft bumps at the elbow. 3. Bursitis: the occurrence of this disease is mainly related to trauma, long-term excessive friction, bacterial or tuberculosis infection, rheumatoid arthritis, osteoarthritis and other reasons. The main symptoms are swelling around the joints, the bursa is full of mucus, and it is soft to the touch, so soft bumps on the elbow may be bursitis. It is recommended that patients with soft bumps on the elbow go to the hospital in time and cooperate with the doctor to actively treat the original disease.