5.Tendinitis
Like the soles of your favorite shoes, tendons can wear away slowly over time. Conditions that inflame your joints, like arthritis, can cause it, too. In your shoulder, the tendons of your rotator cuff and biceps are most likely to have problems.
6.Acute Tendinitis
“Overhead” activities like tennis, baseball, and swimming can cause a form of this, especially if you do them too often, in the wrong way, or without enough rest in between. With treatment, this kind is more likely to get better than the “wear and tear” tendinitis that happens over a long period of time.
