For some reason, probably because of lighter injury, the fibrous tissue of the tendon ruptures and gets inflamed. Pain occurs across the affected area, and the tendon usually slowly heals because the muscle is constantly used. Even if it heals, inflamed fibers can leave a painful scar on the tendon. The pains generally disappear after a few weeks or months, but it may also last longer than than and gets worse, especially in the elderly people.
Tendinitis can occur at any place where the tendon connects the muscle with the bone, but is most common in the shoulder or heels, on the outer side of the elbow (also known as the “tennis elbow”, although it may occur even if you do not play tennis at all) or on the inner side of the elbow.
The painful part of the body needs rest. If necessary, apply neck bandage or some other way of immobilization. Strong bandage and analgesic (paracetamol) should ease the pain. After a few days, gradually start to wrap the wrist to prevent stiffness. If the pain persists or strengthens, the doctor will refer you to X-rays to determine if there is any bone or joint disease, and will decide on the injection of corticosteroids, and perhaps local anesthetic into the painful area. This is a somewhat painful treatment method that will probably have to be repeated but is often very effective. Acupuncture that is increasingly being carried out is also effective.