A raised bump at the finger joints may be related to physiological factors, or may be caused by tendon sheath cysts, rheumatoid arthritis, gouty arthritis and other disease factors. 1. Physiological factors: Commonly found in the elderly or people who have been engaged in manual work for a long time, due to long-term overstrain of the finger joints, which may cause the appearance of a raised bag at the finger joints. 2. Tendon sheath cysts: usually caused by excessive activities of the joints of the hand, resulting in long-term overstrain, resulting in excessive friction of the local tendon sheaths and tendons, which can lead to raised bags in the affected finger joints, and can also be accompanied by pain, restricted joint activities and other manifestations. 3. Rheumatoid arthritis: this disease belongs to systemic autoimmune diseases, can lead to systemic joint involvement, when the finger joints are involved, it may cause finger joints have raised bags, can also be accompanied by joint muscle atrophy, joint deformity and other manifestations. 4. Gouty arthritis: the disease is usually caused by purine metabolism disorders, can be involved in many parts of the body’s joints, the involvement of the finger joints, may cause the finger joints have a raised bag, may also be accompanied by local joints, red, swollen, hot, painful symptoms. A bump on the finger joints may also be caused by other reasons, it is recommended to consult a doctor as soon as possible to diagnose the cause of the problem, and then standardize the treatment under the guidance of the doctor.