Rheumatoid arthritis is usually referred to as rheumatoid arthritis, which can be detected by clinical symptoms such as joint pain and dysfunction, but the diagnosis is mainly confirmed by laboratory tests and imaging tests. Rheumatoid arthritis patients will have joint pain and other symptoms in the early stage of the onset of the disease, mostly symmetrical episodes, usually from the proximal interphalangeal joints, and gradually develop to the hands, wrists, knees, elbows and so on. With joint swelling is usually accompanied by significant pain and joint mobility disorders. Rheumatoid arthralgia with swelling and pain in small joints is usually accompanied by stiffness in the joints in the morning, which usually lasts for more than half an hour to an hour before it can be relieved. Early rheumatoid arthritis can be detected by focusing on the location of the joint swelling and pain, the number of joints and the morning stiffness. However, self-testing is not a substitute for a doctor’s diagnosis. To make a definitive diagnosis, laboratory tests such as rheumatoid factor and imaging tests such as X-rays and ultrasound are needed to rule out other similar diseases. If joint swelling and pain and morning stiffness occur, or if the symptoms persist and do not get better, you should go to the hospital for treatment.