There are several treatments for tendonitis of the back of the hand: First, strict conservative treatment, when the back of the hand tendonitis must strictly avoid finger flexion and extension activities, to avoid further adverse stimulation of the tendon, and at the same time, local microwave physiotherapy, blood circulation and blood stasis medication. Second, you can do the closed treatment of tendonitis, closed treatment is a very good treatment method and the effect is very fast, only need to suffer from tendonitis in the part of the tendon sheath, local injection to the appropriate amount of trichostatin and long-lasting lidocaine can be solved the problem of the disease. If neither of the above options work, surgery can be considered to resolve the tendonitis problem completely.