Symptoms of tendovaginitis in the arm usually include pain, swelling, and limited movement. 1. Pain: Tendovaginitis usually presents obvious localized pain, as well as pressure and pain symptoms. The pain will gradually worsen after the arm joints are overworked and exposed to cold for a long time, and can usually be relieved after resting and applying hot compresses. Generally patients may have obvious stiffness in the arm joints in the morning, after appropriate activities, the stiffness will gradually disappear. 2. Swelling: Inflammatory reaction will appear localized swelling, if the arm tenosynovitis caused by bacterial infection, there will be obvious local redness, swelling, heat and pain. 3. Restricted movement: when moving the wrist joints, there may be obvious symptoms of joint popping or joint compression, or even difficulty in finger flexion and extension, and the strength of the wrist or fingers may be significantly reduced. Tenosynovitis is an acute or chronic inflammatory reaction caused by the tendon sheath tissue. When patients experience these symptoms, it is recommended that they seek prompt medical attention and treatment under the guidance of a doctor.