What is tendonitis primarily caused by?

Tendonitis is primarily caused by inflammation due to excessive use or repetitive strain on the tendons. This condition often arises in individuals who engage in activities that involve repetitive motions, leading to micro-tears and inflammation within the tendon tissue. This inflammation can result in pain, decreased flexibility, and impaired function of the affected tendon.

Excessive use can stem from various activities, such as sports, manual labor, or even long periods of certain postures, which continuously stress the tendons. As the tendons are repeatedly stressed without adequate recovery time, they can become inflamed and lead to the symptoms associated with tendonitis. Understanding this causal relationship emphasizes the importance of proper technique, rest, and rehabilitation in preventing tendonitis, especially for athletes and individuals in physically demanding jobs.