The phenomenon of vague pain inside the arm is usually referred to as paroxysmal vague pain. It is usually associated with local muscle injury, joint lesions, and also seen in diseases where some of the nerves are trapped, such as elbow canal syndrome and cervical spondylosis. If the symptoms are more serious or persistent, it is recommended that patients can go to the orthopedic department of the hospital to improve the relevant examination to help confirm the diagnosis, common causes and treatment measures are as follows: 1, muscle injury: such as muscle strains in the arm, external collision or extrusion of local muscle damage, or prolonged activity in the arm muscle lactic acid accumulation too much, resulting in chronic injury, can cause the phenomenon of vague pain inside the arm, need to pay attention to rest, can be appropriate 2, joint lesions: such as elbow joint soft tissue, joint capsule or ligament damage, or intra-articular osteophytes, etc., can usually lead to paroxysmal pain near the elbow joint on the arm, can be examined and taken under the guidance of a doctor; 3, elbow canal syndrome: mainly due to long-term poor posture and other causes of ulnar nerve compression, can often appear pain in the arm, early symptoms Early symptoms can be vague pain, with the progress of the disease pain can be increased, usually accompanied by numbness and pain in the fingers. Treatment generally requires correction of poor posture and the application of nerve-nourishing drugs such as methylcobalamin, and if conservative treatment is ineffective, surgery can be performed; 4, cervical spondylosis: such as neurogenic cervical spondylosis, cervical spondylolisthesis, etc., can lead to extrusion of the cervical nerve roots, causing pain or numbness in the innervation area, and can also appear in the arm paroxysmal pain. If the pain is severe, you can take non-steroidal anti-inflammatory drugs, such as ibuprofen, acetaminophen, etc. You can also choose acupuncture, massage, etc. for treatment; 5. medial epicondylitis of the humerus: caused by long-term strain, excessive stretching, etc. The main manifestation is pain or soreness in the inner side of the elbow joint, and the patient can also feel a burst of pain in the arm. Sometimes it can be accompanied by limited wrist movement, need to pay attention to rest, can be relieved by local hot compress, apply anti-inflammatory drugs, etc.