The first symptoms of rheumatoid arthritis develop slowly. Periodic low-grade fever appears, accompanied by pain in joints and muscles. There are morning stiffness, tactile pain and symmetrical swelling of the joints. Rheumatoid arthritis most often affects the small joints of the hands and feet, less often the elbow, knee and hip joints. The diagnostic process of RA should be carried out by a rheumatologist or orthopedist.