The symptoms of tendinitis are mainly as follows: 1. It manifests as obvious pain around the heel. This pain in the early stages is mainly concentrated in the front of the heel bone, which is the area behind the arch of the foot and near the heel bone. When the condition worsens, it may involve the whole heel or the whole foot, resulting in very obvious pain. This pain can be significantly increased when the patient puts weight on the ground or hooks the toe. 2. It may lead to significant local swelling. In the early stages of such inflammation, the swelling is not obvious. However, if the inflammation is more intense, it can lead to significant swelling around the heel. 3. It may lead to significant limitation of movement. The patient is often reluctant to use this side of the lower extremity for weight-bearing activities after the development of this disease, which may lead to significant restriction of movement in this side of the foot over time. 4. There may be atrophy of the intrinsic muscles of the foot. Often due to prolonged braking, do not go to the ground weight-bearing activities, which led to the foot muscles produce disuse atrophy.