Tendinitis is a chronic occupational disease that can cause inflammatory damage to the tendon and tendon sheath, leading to symptoms such as swelling and limited mobility. For the treatment of tendinitis, oral non-steroidal anti-inflammatory drugs can be taken, or topical ointments can be applied to the affected area to reduce inflammation and relieve pain, which can effectively alleviate the symptoms of tendinitis. It is also important to rest, and treatments such as heat application, physiotherapy, or local injections can be used. These methods can effectively improve symptoms and even achieve a cure. If conservative treatment is ineffective or if there is a functional impairment, minimally invasive procedures or surgery may also be considered.