Sudden pain in finger joints may be caused by trauma, gout and rheumatoid arthritis. 1. Trauma: the patient’s finger joints are damaged by external force, due to the local muscles, soft tissues and other injuries will appear finger joint pain, joint swelling and other symptoms. 2. Gout: gout is a systemic disease caused by purine metabolism disorders, patients can be due to urate deposition in the joints and stimulation caused by arthritis symptoms, patients can appear joint pain, joint swelling and fever and other symptoms. Sudden pain in the finger joints may be related to the occurrence of gout. 3. Rheumatoid arthritis: Rheumatoid arthritis can involve the peripheral joints, including the finger joints, and lead to corresponding joint symptoms, such as joint swelling, joint pain, joint deformity and joint movement restriction. Sudden pain in the finger joints may be related to rheumatoid arthritis. There may be other reasons for the sudden pain in the finger joints, so it is recommended to go to the rheumatology and orthopedics departments of regular hospitals for further consultation, and follow the doctor’s instructions for diagnosis and treatment.