Local cortisone only hides the pain - it does not correct anything.  In the long run it will cause more damage and is hard on your liver.  Plus, those shots HURT!!!  They stick the needle right into the joint. 

Symtoms of CTS is pain and stiffness in the elbows and numbness in the hands (most people have pain in the palm and thumb, but it can effect all of the fingers).  It may be worse in the morning making a lot of people think they "slept wrong". 

LVS - Where Learning is Fun!  
http://www.lvsonline.com/index.html