Tendinosis is where a tendon’s collagen degenerates in response to overuse. Tendonitis, however, is when a tendon becomes inflamed. The umbrella term for these conditions is tendinopathy. Tendinosis ...

Rest, ice, compression, and elevation help treat tendonitis at home. Overuse, like typing or running, often causes extensor tendonitis. Pain from tendonitis gets worse if you use the affected muscles ...