The joints of the limbs always have pain for no reason, which heals itself after a few days, and it is usually related to arthritis, synovitis, and gout and other diseases. 1. Arthritis: a general term for various types of joint inflammation, mainly including rheumatoid arthritis and osteoarthritis. These diseases lead to permanent lesions in the joints and tend to cause joint pain, but the symptoms may suddenly resolve themselves. About the disease need long-term medication, such as oral colchicine tablets, dexamethasone and so on. 2. Synovitis: related to infection and inflammation, local trauma, mainly manifested as joint swelling and pain; the symptoms may be self-healed, but easy to recur. Treatment should pay attention to rest, avoid tiredness, serious cases can be prescribed oral painkillers, such as aspirin. 3. Gout: it is a disease caused by the increase of uric acid. At the onset of the disease, patients will have symptoms such as redness, swelling, pain and fever in the joints, and the disease is easy to recur. Treatment should be taken orally as soon as possible to lower uric acid drugs, such as allopurinol, febutasi, etc., the pain is serious can follow the doctor’s instructions to take indomethacin. If the joints of the limbs always hurt for no reason, and then recover after a few days, you should consult a doctor in time to clarify the cause of the disease, so as not to cause irreversible damage to the joint function.