My Shin Bone Are Raised Up Above My Legs

For the last several days my legs and ankles have been hurting really bad.  I have to prop them up on pillows in my recliner.  I am disabled due to addisons disease, panhypopituitary, etc.  Long story!  Anyway, last night I was rubbing my legs because they hurt so bad and I realize that my shin bones are raised up . .  so much so that there is a crease down the side big enough that my fingers can run down it!!  My shins have NEVER been like this before!  The right leg is worse than the left leg.  What could this be?  It hurts!