Tendonitis is a condition that occurs when a tendon, which connects muscles to bones, becomes inflamed or irritated. This often happens due to repetitive movements or overuse, making it common among athletes and people with physically demanding jobs. Symptoms typically include pain, swelling, and stiffness in the affected area, which can make everyday activities difficult. Treatment for tendonitis usually involves rest, ice, and over-the-counter pain relievers. In some cases, physical therapy may be recommended to strengthen the surrounding muscles and improve flexibility. If symptoms persist, a healthcare professional may suggest more advanced treatments, such as corticosteroid injections or surgery, to relieve the pain and restore function.