Thick fingers may be caused by congenital larger bones, but also may be caused by obesity, rheumatoid arthritis. Can take general treatment, diclofenac sodium and other medication to improve. 1. Congenital factors: part of the population due to their own skeleton is relatively large, can lead to thick fingers, is a congenital factor, will not affect the health, and do not need treatment. 2. Obesity: these patients usually have thick fingers, need to actively exercise, diet control, weight reduction, in order to improve. 3. Rheumatoid arthritis: some rheumatoid arthritis can lead to finger deformation and coarsening at the same time. Need to reduce labor intensity, with functional exercise, while using diclofenac sodium and other non-steroidal anti-inflammatory drugs to relieve pain and other symptoms, while using methotrexate and other anti-rheumatic drugs for symptomatic treatment. There are other reasons for thick fingers, such as gouty arthritis. It is recommended to consult a doctor in time, complete the examination, and follow the doctor’s instructions for appropriate treatment after a clear diagnosis.