The pain in the arm joints after waking up: 1, may be caused by rheumatoid arthritis pain in the arm joints, this condition is often seen in the morning morning stiffness, usually morning stiffness in the amount of about an hour to get complete relief, you can check the rheumatoid factor to confirm the diagnosis and exclude. 2, there may also be osteoarthritis in the arm, which is what we usually call wear and tear of the joint, osteophytes, this time will appear when waking up arm joint pain, activity can be significantly improved in about half an hour. 3, after waking up the arm joint pain, may also be localized tendinitis pain, often in the morning after waking up just after the beginning of the activity, after the activity symptoms can be partially improved. So if the above symptoms occur and are not relieved in the short term, you must go to a regular hospital in time.