Most experts now use the term tendinopathy to include both inflammation and microtears. But for many years most tendon problems were called "tendinitis." Many doctors still use this familiar word to describe a tendon injury.
Most tendon injuries are the result of gradual wear and tear to the tendon from overuse or aging. Anyone can have a tendon injury. But people who make the same motions over and over in their jobs, sports, or daily activities are more likely to damage a tendon.
A tendon injury can happen suddenly or little by little. You are more likely to have a sudden injury if the tendon has been weakened over time.
Tendinopathy usually causes pain, stiffness, and loss of strength in the affected area.