During the last three months of pregnancy, the hands swell slightly, and a ring can become too tight. A tight ring constricts the blood flow out of, but not into the finger, resulting in sudden swelling. Once this occurs, the finger needs emergency medical attention, and the ring must be cut off. Tenosynovitis is inflammation of the sheath surrounding a tendon. Normally, each tendon moves easily within the tendon sheath.
Overuse can inflame the tendon and cause grating and pain.
The condition can become so serious that the patient can hear the tendon grating. This is known as tenosynovitis crepitans. A physician should be consulted at the first sign of pain. Trigger finger is another type of mechanical disorder of a tendon. A lump develops on the tendon of a finger through overuse.