Periarthritis of the shoulder refers to the aseptic inflammatory reaction caused by chronic strain on the tendons, ligaments, and joint capsule around the shoulder joint, characterized by local pain, swelling, and even limited mobility. The typical symptom is resting pain, and pain occurs during both active and passive movements. If periarthritis of the shoulder occurs, it is advisable to visit the orthopedics department of a formal hospital for appropriate treatment. Besides resting, it is also suggested to engage in proper functional exercises and physiotherapy to prevent stiffness of the shoulder joint. Periarthritis of the shoulder can be very painful and significantly affects the movement of the entire shoulder joint. The symptoms are quite severe, but with systematic treatment, function generally can be restored.