The tendon pain at the back of the patient’s foot neck is usually considered to be Achilles tendonitis, which is the pain at the back of the ankle joint. Achilles tendonitis is mostly caused by too much and excessive sports, especially weight-bearing sports, such as going up and down stairs, hiking, one strenuous run, long distance and excessive running can cause the Achilles tendon to be strained, and therefore pain and soreness in the Achilles tendon area can occur. Patients should avoid these sports and take a complete rest for about two weeks. The Achilles tendon area can be treated with topical application and massage with Fotarine, and then infrared irradiation, hot compresses and physical therapy can be used to improve local blood circulation. Generally, through active conservative treatment, the symptoms can be significantly relieved in about two weeks.