Doctors cannot always identify the cause of tendonitis in the hand; however, when they can, the cause is often overuse and overload, says Drugs.com. Overuse is repeating a motion too often, and overload is doing an activity too excessively.
Shoulder tendonitis is caused when the tendons in the shoulder are torn or stretched when the arm is used in an overhead position during such activities as swimming or tennis, claims the American Academy of Orthopaedic Surgeons. People who lift things over their heads for a living also suffer should
Tendons are bands of fibrous connective tissues made of parallel collagen fibers. Collagen allows the tendons to be strong and flexible. This is necessary because tendons are stretched tightly when activated.
Treatments for tendonitis include pain relievers, corticosteroids, platelet-rich plasma treatment, physical therapy and surgery. The primary aim of these treatments is to reduce inflammation and relieve pain, according to Mayo Clinic.
The function of tendons is to connect muscle tissues to bones. The same way ligaments connect bones to other bones, tendons act as the bridge between muscles and bones. This connection enables the tendons to regulate forces between muscle tissues during movement so that the body remains stable.
Some causes of tendon pain in the wrist include typing, writing and other repetitive-stress activities with the hands and wrists, states Healthline. Tendon pain can also be a side effect of another health condition, such as rheumatoid arthritis, scleroderma, gout or diabetes.
The tendons in the foot include the flexor digitorum longus tendon, the flexor hallucis longus tendon, the peroneus longus tendon, the Achilles tendon and the plantaris tendon, according to InnerBody. Other tendons are the tibialis anterior tendon and the extensor digitorum longus tendons.
Medical conditions that cause chronic inflammation include cancer, diabetes, depression and heart disease, according to U.S News and World Report Health. Other medical conditions such as stroke, Alzheimer's and obesity also cause chronic inflammation.
The symptoms of tendonitis in the finger include pain in the tendon when it is moved and swelling around the area, Johns Hopkins Medicine states. Tendonitis is the inflammation of any tendon in the body.
Pain and injury to the Achilles tendon are usually caused by tendinitis, which is triggered by overuse, an increase in physical activity, high heels, flat feet or overly tight muscles, according to WebMD. Sudden movements are more likely to tear or otherwise injure the tendon.