Treatment of tendonitis is divided into four types. The first is conventional treatment, which involves following the RICE principle during the acute phase. The second is medication, which includes the use of non-steroidal drugs and the option of local injections, but repetitive injections are not recommended as they can lead to tendon rupture, such as the rupture of the Achilles tendon often caused by such treatment. The third approach is for patients with chronic conditions where the affected area has developed adhesions and conservative treatment is ineffective. In such cases, surgical treatment should be considered, though the drawbacks include significant trauma, pain, and a long recovery period. The fourth method involves physical therapy, including heat therapy, ultrasound treatment, and microwave treatment. Thus, the basic treatments for tendonitis encompass these four approaches.