If it is adhesions or "scar tissue" the first steps would be to try some massage or even a gentle stretching program to loosen up the adhesions.

If nothing is done to resolve or loosen them , then possibly they could " harden" or become more of a chronic thing.

some threads w/ ideas-
http://neurotalk.psychcentral.com/thread149529.html

and you may even have trigger points -TrPs
http://neurotalk.psychcentral.com/thread125577.html

http://neurotalk.psychcentral.com/post388-1.html