Tenosynovitis of the thumb is clinically known as radial stenosis tenosynovitis, which is caused by the long-term hyperflexion of the thumb and repeated friction of the long thumb extensor and short thumb extensor muscles in the tendon sheath, resulting in inflammation of the tendon sheath area and inflammatory reactions such as local skin redness, swelling, heat, and pain. This disease is mostly seen in white-collar workers, accountants, hairdressers, cashiers and other people with heavy hand strain who need to hit the keyboard for a long time. Patients can be relieved by the following clinical manifestations and examinations with related treatments: I. Clinical manifestations: The pathological manifestations of thumb tenosynovitis will also appear in the wrist in addition to the thumb area, specifically manifested as pain during activity, which can be relieved after rest, and localized pressure pain under pressure The pain can be relieved with rest and localized pressure under pressure. In the case of prolonged untreated disease, swelling and weakness in the wrist and thumb area may also occur. The patient can usually see the nodules that exist under the skin and protrude from the surface of the wrist, as well as local redness and swelling. If there is pain in the wrist, it is a positive test, suggesting the presence of thumb tenosynovitis; 4, other: X-ray and MRI examinations can help clarify the extent of the lesion, but generally do not need to be performed. Treatment: 1. Supportive therapy: Patients should try to avoid excessive hand activities, such as typing and housework, and if necessary, brace immobilization; 2. Medication: Patients with mild cases can use non-steroidal anti-inflammatory drugs such as celecoxib and etoricoxib for pain relief. Diclofenac diethylamide latex is often used in conjunction with it when restricting activities. Glucocorticoid drugs such as hydrocortisone acetate can also be administered intrathecally for the purpose of eliminating inflammation and edema; 3. Physiotherapy: ice packs can be applied in the acute phase to limit the spread of inflammation and provide analgesia. In the chronic stage, hot compresses and infrared physiotherapy can be applied to promote blood circulation to help the absorption of inflammation; 4, Chinese medicine treatment: Chinese medicine physiotherapy massage, small acupuncture knife, etc., the treatment of this disease may also have a certain role; 5, surgery: the above methods are not effective, surgical release treatment can be performed. Precautions: In daily life, patients should pay attention not to use their hands excessively to avoid aggravation or recurrence of the disease. You can also often soak your hands in warm water to help relieve fatigue.