There are several risk factors for developing tendonitis, such as age, working in particular jobs, or participating in certain sports. Other contributing factors may include:
Incorrect posture at work or home,
Poor conditioning before exercise or playing sports,
Abnormal or poorly placed bone or joint that stresses soft tissue structures (e.g., arthritis),
Stresses from conditions such as rheumatoid arthritis, gout, psoriatic arthritis, thyroid disorders, or unusual medication reactions,
Overuse or doing too much too soon when the tendons aren’t used to making a movement or doing the task taken on (e.g, “weekend warrior”).
Infection from a cat or dog bite to the hand or finger.