There are many reasons for this condition, the most common being the following: 1) local injury caused by trauma to the tendons; 2) local aseptic inflammation caused by prolonged overstretching stimulation, commonly known as frozen shoulder, humeral epicondylitis and humeral epicondylitis, which can cause tendon pain when the arm is exerted. For such patients, it is usually necessary to reduce the amount of exercise, apply local hot compresses, and apply topical ointments that activate blood circulation, reduce blood stasis, and relieve pain. You can also take oral pain relief medications, such as ibuprofen extended-release capsules and compound clozoxazone capsules. For such patients, compound betamethasone as well as lidocaine can also be applied for local closed injection.