RSI symptoms are very often the result of extremely tight (overused) forearm extensor muscles. These muscles are located in the upper forearm region. They are used to raise the wrist and fingers, which is the primary motion involved in unergonomic keyboard and mouse driven activities.
The symptoms have been described by a few physicians to [...]

This is a follow on article from Part 1 which dealt with managing Initial RSI Symptoms.
The following is relevant if you have been experiencing RSI symptoms for a few months and they are now persistent in nature.
The rate of success in dealing with RSI symptoms is proportional to the speed that a sufferer can diagnose [...]